In short
The episode combines three stories: (1) “Disrupter U.”, a new Texas college (University of Austin, UATX) built around open debate and “Chatham House rule” classrooms; (2) “Sculpting Evolution,” MIT-led genetic engineering research to make wild mice heritably immune to Lyme disease; (3) “Flight of the Monarchs,” a nature report on the monarch migration to central Mexico and conservation efforts.
Guests (people interviewed/featured)
- Neil Ferguson: Oxford-educated historian; UATX founder; former Harvard professor; senior fellow at Stanford’s Hoover Institution.
- John Murtheim: 60 Minutes correspondent (reporting segment on UATX).
- Nadine Strassen: former ACLU president; UATX advisor.
- Kevin Esvelt: MIT associate professor; leads “Mice Against Ticks” CRISPR work.
- Sam Telford: Tufts epidemiologist; studies ticks on Nantucket.
- Dr. Timothy Lepre: Nantucket emergency physician/medical examiner; runs private practice treating Lyme.
- Charles Darwin (referenced historically, not a guest).
- Cort Whalen: monarch guide/photographer.
- Chip Taylor: ecologist; founded Monarch Watch.
- Eduardo Rendon: WWF Monarch Butterfly Program head.
- Dr. Joanna Buckthold and Zach Hill: MIT researchers shown in lab work.
- Dr. John LePouc: 60 Minutes correspondent (Lyme segment).
Key claims
- UATX argues universities have become politically skewed and students/faculty self-censor; it aims to “reset the marketplace of ideas” via small seminars, Western-civ curriculum, and non-attribution discussion rules.
- Lyme story: scientists propose CRISPR-edited wild white-footed mice that pass Lyme immunity to offspring, breaking the tick-mouse infection cycle without killing mice.
- Monarch story: monarch numbers have fallen ~70% in 30 years; conservation (WWF, Monarch Watch) and milkweed “waystations” support survival.
Notable examples
- UATX: founders cite data like “<3% Harvard faculty conservative” and “~80% students self-censor”; classes use Chatham House rule; admissions swap DEI for “MEI” (merit/excellence/intelligence) and claim no race/gender consideration.
- Lyme: Nantucket fieldwork; engineered antibody gene + CRISPR injected into mouse embryos; plan for phased releases after community buy-in and possible private-island trials.
- Monarchs: roosting in Michoacán fir/pine at ~11,000 feet; “mud puddling” for salts; milkweed loss from herbicide-tolerant crops; tagging by Monarch Watch (2+ million tagged).
Written by AI. May contain mistakes. Listen to the episode to check what was said.
Chapters
Tap a time to open that second in VOCrisis in Higher Education
1:56 to 2:55
Discussion about the current challenges facing higher education, including tuition and campus culture.
“Contempt for campus culture, the trigger warnings, safe spaces, microaggressions, helped swing the election, a political win aided in part by the work of conservative activist Charlie Kirk.”
The University of Austin's Mission
2:55 to 4:20
Exploration of the University of Austin's commitment to open debate and its implications for the marketplace of ideas.
“141 years old, the University of Texas at Austin ranks among the country's largest schools.”
Student Perspectives at UATX
4:20 to 6:40
Insights from students of UATX on why they chose the university and their experiences with diverse viewpoints.
“for Bernie Sanders or to the left of that even, to people who would make Donald Trump look like a liberal.”
Concerns Over Academic Freedom
6:40 to 7:40
Discussion on the perceived decline of academic freedom and the rise of self-censorship on campuses.
“places where you could think most freely and speak most freely and take the most intellectual risk.”
UATX's Approach to Education
7:40 to 9:20
Examination of UATX's educational philosophy, including its rejection of conventional diversity initiatives.
“one email a day from a member of the university community calling for somebody else to be fired for something they'd said.”
Funding and Influence at UATX
9:20 to 11:30
Analysis of UATX's funding sources and concerns over potential donor influence on academic integrity.
“But the truth is that one opinion meeting another opinion shouldn't leave us with two opinions.”
Free Speech Debates
11:30 to 12:20
Discussion on the importance of free speech in educational settings and arguments against censorship.
“As for admissions, UATX swaps DEI, Diversity, Equity and Inclusion, for what some call MEI, Merit, Excellence and Intelligence.”
UATX and Academic Controversies
12:20 to 14:00
Exploration of the controversies surrounding UATX's founding and its approach to hiring academics with controversial backgrounds.
“Critics attack UATX as a right-wing university simply wearing the cloak of free speech.”
The Challenge of Discriminatory Attitudes
14:00 to 15:14
Exploring the need for educational approaches to tackle discrimination in academia.
“My concern is to try to eliminate the underlying discriminatory attitudes.”
Genetic Engineering to Combat Lyme Disease
15:14 to 16:40
A look into the innovative use of genetic engineering on Nantucket to tackle Lyme disease.
“John LePouc on assignment for 60 minutes.”
Show all 19 chapters
Understanding Lyme Disease's Impact
16:40 to 19:45
Insights into the effects of Lyme disease on the Nantucket community and individuals.
“It is the one plague that might be severe enough that communities might want to engineer a wild organism in order to get rid of it, or at least reduce the level of Lyme.”
Engineering Mice to Break the Lyme Cycle
19:45 to 22:29
Discussing methods to genetically modify mice to interrupt the cycle of Lyme disease.
“Timothy Lepre might finally be able to retire.”
Community Involvement in Genetic Research
22:29 to 27:45
Highlighting the importance of community buy-in for scientific advancements in genetic engineering.
“I mean, it's not like we want a fitness advantage.”
Field Trials and Future of Genetic Engineering
27:45 to 28:00
The potential outcomes and plans for field trials of engineered mice to combat Lyme disease.
Field Trials and Community Discussions
28:00 to 28:30
Learn about the significance of successful field trials and community engagement in ecological projects.
“It's something that allows us to dramatically reduce the fraction of ticks that are infected, that doesn't have anything obviously go wrong with the ecosystem.”
Monarch Butterfly Migration
28:31 to 36:20
Explore the epic journey of monarch butterflies from Mexico to the U.S. and the factors affecting their population.
“Earlier this year, we reported on one of the most remarkable and mysterious migrations in the natural world happening every spring from Mexico to the United States.”
Conservation Efforts for Monarchs
36:21 to 37:56
Discover the efforts to protect monarchs and their habitats, including community involvement and scientific tracking.
“World Wildlife Fund has spent years trying to combat the destruction, assessing the health of the forest, measuring the size of butterfly colonies, and planting trees.”
Monarchs and Cultural Significance
37:57 to 40:19
Understand the cultural beliefs surrounding monarchs in Mexico and their connection to the Day of the Dead.
“They're recruited by Chip Taylor, an 87-year-old ecologist who's been fascinated by monarchs since he was a child.”
Schnadling and Improvisation
42:00 to 42:20
Explore the concept of schnadling and its improvisational nature.
“And a machine programmed to create a masterpiece.”
Transcript
Automatic transcript. May contain errors.0:07Across America, everyone has an opinion on, quote, wokeness. Nowhere more than on our college campuses. Politics should be studied at a university. It shouldn't be the operating system of university. In Texas, one new university is prioritizing open debate to reset the marketplace of ideas. If our universities are screwed up, and I believe they are, then that will screw up America as a whole quite quickly.
0:34The natural disaster in our area is not hurricanes or tornadoes or earthquakes. It is Lyme disease. Genetic engineers believe they found a way to slow the spread of the debilitating disease carried by ticks. It is amazing to see this. Tonight, a look at something that's never been attempted, genetically engineering wild mice to prevent people from getting sick. Do you worry about fooling around with Mother Nature?
1:06It's not easy to get to, and it's not easy to see at first, but then one of the most amazing migration stories in nature reveals itself.
1:19Towers of monarch butterflies Orange, twisting, soaring And one of the most remarkable things we've ever seen
1:33I'm Scott Pelley I'm Bill Whitaker I'm Anderson Cooper I'm Sharon Alfonsi I'm John Wertheim I'm Cecilia Vega I'm Leslie Stahl Those stories and a preview of what's coming up in our 58th season tonight on 60 Minutes.
1:56These are not soaring times for higher education. Tuition costs rise unchecked. Contempt for campus culture, the trigger warnings, safe spaces, microaggressions, helped swing the election, a political win aided in part by the work of conservative activist Charlie Kirk. His assassination 11 days ago has prompted a nationwide conversation on free speech, which, as correspondent John Murtheim first reported last year, is a founding principal of the University of Austin, a college startup touting open debate, a shout-nothing-but-say-anything philosophy, and for now, free tuition. Will this be just another politicized campus swinging right, or a true disruptor resetting the marketplace of ideas?
2:56141 years old, the University of Texas at Austin ranks among the country's largest schools.
3:05Football games draw more than 100 ,000 fans. But blocks away, in between a Ruth's Chris and a Velvet Taco, on a floor of what was once a downtown department store, one of America's smallest universities, UATX, the University of Austin. How would you describe members of the founding class? Very outspoken. You'll never enter a conversation and leave without something that you didn't know before. talking to someone. Olivia Altonis, Dylan Wu, Constantine Whitmire, Grace Price, and Jacob Hornstein are among the 92 students in the inaugural class. If UT is celebrated for Longhorn football, the focal point of UATX…
3:48Pursuing the truth. So you stop by telling the truth. Pursuit of truth. Fairlift pursuit of truth to me is, I have this kind of mentality that the best way that you should go about your life is to always assume that you're wrong in some capacity. You're prepared for that. Right. To be challenged and stress tested and confronted? It's not just even prepared. It's, I, that's why I'm at this school. I want them to be challenged because I know that I'm wrong in some way. What are some things that differentiate you guys? We're very intellectually diverse. I've met people of every political persuasion here from like far left Democrats who are for Bernie Sanders or to the left of that even, to people who would make Donald Trump look like a liberal.
4:28Roughly half the students come from Texas, a third are female. They share academic strength, averaging in the 92nd percentile on the SAT. Some were accepted at schools like the University of Chicago in Georgetown, but chose UATX for what it is and is not. I remember visiting a college in the northeast of the U.S. and the student guiding me there was like, ah, we have different dorms for different student groups. I didn't want to go to a space that was like that. Why do you think it's important to be at a college where differing views aren't just accepted and tolerated, but welcome? We're actually listening to the other side and understanding each other.
5:08Still, we're friends with each other. I vehemently disagree with many of the things Jacob says, and I think you do, too. I don't want to... It's like what? You still belong pretty well, and it's a beautiful thing. Not exactly the vibe on so many other campuses. Long before Hamas attacked Israel on October 7, 2023, colleges have been sites of protest and have leaned left. But the atmosphere has intensified over the past decade.
5:43Speakers shouted down. You're not listening. Professors canceled when students feel unheard. Hamas, now! Then the reckoning. Campus chaos led first to congressional hearings. Ms. McGill, the fact is that Penn regulates speech that it doesn't like. Then to the resignation of the presidents at Columbia, University of Pennsylvania, and Harvard. From a historian's point of view, it's terribly important that the United States improves, reforms, revitalizes its universities. Scottish-born, Oxford-educated, and recently knighted, Neil Ferguson is one of the founders of UATX. An historian, also known for his conservative views, Ferguson spent more than a decade as a professor at Harvard and is now a senior fellow at Stanford's Hoover Institution.
6:34You say something is rotten in the state of academia. What do you mean by that? Right up until, I guess, the early 2000s, it still seemed like universities were the places where you could think most freely and speak most freely and take the most intellectual risk. And at some point in the last 10 years, that changed. And it changed in a way that began to stifle free expression. We came across some data that less than 3 % of the Harvard faculty identifies as conservative, more than 75 % identifies as liberal. Wildly out of proportion with the American public. There's a huge disconnect now between the academic elite and the average American voter.
7:15Ferguson says this political imbalance, plus social media, plus an army of campus administrators monitoring speech, equals a culture where, per one study, nearly 80 % of today's students self-censor on campus for fear of being ostracized. Faculty feels the chill too. The president of a university I won't name once told me that he received, on average, one email a day from a member of the university community calling for somebody else to be fired for something they'd said. That reminds me vividly of the bad old days of Stalin's Soviet Union, and yet it's happening on American campuses. The stakes are that high?
7:57I think if a university system starts to go wrong, then something is bound to go wrong for the society as a whole. The ideas that start on campus pretty quickly spread to corporations, to media organizations. University forms the way you think about the world for the rest of your life. If our universities are screwed up, and I believe they are, then that will screw up America as a whole quite quickly. In 2021, Ferguson launched UATX with founder of the free press, Barry Weiss, Joe Lonsdale, co-founder of data analytics company Palantir, and Pano Canelos, the former president of St. John's College in Maryland.
8:36Larry Summers, the former Harvard president and U.S. Treasury secretary under Clinton, became an advisor. In this ad, they announced they were, quote, done waiting for America's universities to fix themselves. UATX received initial approval from the state of Texas and raised nearly$200 million from private donors, in part to cover tuition. Good morning, everyone. Canelos was named president. Our work is to stir up settled ideas. Now the school's chancellor, he says that to the detriment of learning, colleges have become echo chambers. What is going on on campuses that are leading you to draw this conclusion?
9:14It's as if people have come to expect that they're just sort of two versions of everything. And therefore, there's a right version and a wrong version, depending on which side you stand. But the truth is that one opinion meeting another opinion shouldn't leave us with two opinions. It should leave us with better opinions. What do you mean by that exactly? The Christian values that we have. To combat fears of saying the wrong thing in class, UATX comes armed with a weapon. Tell an American audience, what do you mean by Chatham House rule? The Chatham House rule is a great British invention. And it says that if you are a participant in a discussion and you hear an interesting thing said, maybe a controversial thing.
9:55You can refer to the information that you've gleaned, but you can't attribute it to a person. People fear that the thing they said that was not right was politically incorrect ends up on X, or for that matter, on Instagram. And that which happens in the classroom should stay in the classroom. At UATX, classes are small, seminar-style, and based in Western civilization. The Bible, Greek classics. Faculty includes a former Navy captain, a Greek Orthodox priest, Father Maximus teaches a class on chaos and civilization, and a tech entrepreneur. You're trying to play the Steve Jobs role here, right?
10:35There are no on-campus science labs, but founders chose Austin for its booming startup culture, linking students with companies like Elon Musk's Neuralink. How do you take this cutting-edge research? And helping the kids sharpen their tech skills and even fund their own ideas. We have both a nonprofit and a startup side. To stem the scandalously high cost of higher education, the UATX campus is bare bones.
11:04No dorms. The students live in apartments next to UT undergrads. And no meal plan. Cook for yourselves, kids. The closest thing we found to a college rager, students learning the Texas two-step. When the guys next door are playing beer pong and you're reading Aristotle and working with lasers. Playing chess. Any envy? That's not to say that we're all prudes and we just spend our whole day reading Aristotle. We have fun. As for admissions, UATX swaps DEI, Diversity, Equity and Inclusion, for what some call MEI, Merit, Excellence and Intelligence. Gender, race, ethnicity, what is the factor of that in your admissions decisions?
11:51We don't take any of that into consideration in admissions. The primary thing that we're interested in is the mind. Meaning what? The kind of capacity to think deeply, to answer questions, to challenge norms. I've got to tell you, we did not see a particularly diverse student body. We are putting resources into finding talent of an intellectual variety. And if you're interested in diversity, I recommend you look at the social backgrounds of our students, at the family circumstances of our students. High-profile UATX donors include Trump-backing billionaire Bill Ackman, a Harvard grad who vocally criticized his school after October 7th, and Harlan Crow, close friend of conservative Supreme Court Justice Clarence Thomas.
12:41Critics attack UATX as a right-wing university simply wearing the cloak of free speech. UATX has been called the anti-woke university. Harvard is a liberal university. UATX is going to be a conservative university. Politics should be studied at a university. It shouldn't be the operating system of university. Any university that is identifiably political is not fulfilling its highest mission. The pushback might be, are you going to be too dependent to donors? We've seen on other campuses what happens when the donor class gets dissatisfied. Are you worried about that? If donors are ever pushing us in a way that is not aligned with our mission and that, somebody's going to call us out on it.
13:21And the backers aren't solely from the right. A liberal legal scholar, Nadine Strassen, was president of the ACLU for nearly 20 years and was until recently a UATX advisor. The most important topics of public policy debate are not being candidly and frankly discussed on campus, including abortion, immigration, police practices, anything to do with race and gender. Provided it comes with no serious harm, Strassen argues all speech should be allowed. You think censorship leads to worse outcomes than allowing even the most objectively hateful speech? My concern is to try to eliminate the underlying discriminatory attitudes.
14:07You don't do that by punishing expression. You do that through education, through more speech, not less. Free-range, free speech resonated. When UATX announced its founding, thousands sent in job inquiries. Some of UATX's academics were disciplined, canceled, they may say, at their previous schools. Some of the advisors and faculty came here under some clouds of controversy. I mean, that's not what we're seeking. I mean, we're not, you know, shelter for, you know, even for people who have canceled. But many of the people who are pushing boundaries in academic culture, let's say in the public sphere, have paid a price for that and still should be heard.
14:51UATX's national accreditation won't be decided until the first class is graduated, a standard for new universities. Meanwhile new student applications are open, tuition still free. So is the speech.
15:14Now, Dr. John LePouc on assignment for 60 minutes. Biologist Charles Darwin began crafting his theory of evolution on a trip to the Galapagos Islands, where he discovered animals had developed unique traits that varied from island to island. Nearly two centuries later, on a different island, scientists aren't just observing evolution, they now have the technology to shape it. This past year, we met a team of modern-day Darwins on Nantucket, where they're hoping to use genetic engineering to reduce the transmission of Lyme disease, a tick-borne illness found primarily in the Northeast and Upper Midwest, but also throughout the United States.
15:56The scientist's target may surprise you. It's not the deer often associated with the disease or even the ticks, but wild mice, the main carriers of Lyme. It's a first-of-its-kind approach, where scientists and locals are working together to decide whether to sculpt evolution. 30 miles off the coast of Cape Cod, Massachusetts, is the island of Nantucket, a 14-mile-long, 3-mile-wide oasis known for its natural beauty, pristine shorelines, and protected landscape. But hidden is a scourge that's afflicted 15 % of its residents. The natural disaster in our area is not hurricanes or tornadoes or earthquakes.
16:39It is Lyme disease. It is the one plague that might be severe enough that communities might want to engineer a wild organism in order to get rid of it, or at least reduce the level of Lyme. Last October, deep in the island's brush, we found MIT associate professor Kevin Esfeldt, a pioneer in genetic engineering, waving a white flag in search of ticks. So we just grab it. These tiny vectors of Lyme disease were not hard to find. You just pop it in. These are the big ones because these are largely adults. If the adults are this small, imagine the tiny, tiny, what are they called, nymphs? Nymphs, yeah.
17:20You often think of poppy seed sized. Esfeldt's collaborator is Sam Telford, an epidemiologist at Tufts University who's been studying ticks on Nantucket for the last 40 years. There's a 50 % chance, maybe more, that this is actually carrying Lyme disease. But you're not afraid because it has to be embedded and attached. It has to be attached for more than 24 hours. Right. To infect you. That's correct. These guys will swell up. Yeah. 50 to 100 times that size with blood, you know. It becomes that big. And that's how you know when they're engorged, you know that they've been feeding on you. If you see it that big, then you're in trouble.
18:02The scientists aren't here just to collect ticks. They're interested in this critter. This is a wild mouse? This is a wild, white-footed mouse. And you've tagged it? I've tagged it, so when I come back in April or May of next year, we get an idea of what overwintering success is. Telford is tracking the mouse population on Nantucket as part of a novel project. The scientists want to use genetic engineering to interrupt the cycle of infection necessary for Lyme disease to flourish. White-footed mice are the main host of Lyme bacteria. When an uninfected tick bites an infected mouse, the bacteria transfer to the tick.
18:42When that infected tick then bites an uninfected mouse, the cycle continues. Deer don't get infected, but they help spread the disease because ticks embed on them to feed, then reproduce, with a single female tick laying as many as 2 ,000 eggs. Here's Esfeldt and Telford's big idea. Change the genetic makeup of the mice so they're immune to Lyme. That way, the ticks that bite them won't get infected. You don't have to kill the mouse in order to interrupt the cycle. It'd be so much more economical and straightforward to just go out and poison all the mice, right? Get rid of the mice. But then there's a whole food chain that might depend on these mice that would be impacted.
19:24The dream is that we can use new technologies to ensure that wild creatures can live in peace, playing their normal ecological role, but without causing disease that make people suffer. Come on in, Winnie. If Esfeld's dream becomes a reality, 80-year-old Dr. Timothy Lepre might finally be able to retire. So how did you get Lyme disease, do you think, Winnie? Uh, wasn't because of your tape back, right here? Over the past 40 years, he's been the island's emergency room head, sole surgeon, even its medical examiner. Today, Dr. Lepre runs the only private practice on Nantucket, where he treats dozens of patients with Lyme disease each year.
20:11Fall my finger. And yes, that's a giant tick in his waiting room. Being in private practice, it is, while not well paid, it's paid in like what, chickens and donuts and... We prefer lobsters. Actually, lobsters, clams, and scallops. But you'll take anything, right? I will take anything. Come on down, Shauna. Lyme disease can be treated with antibiotics, but if left untreated, the infection can spread to the heart, joints, and nervous system, as it did for 33-year-old Shauna Asplint. My body hurts all the time. I don't know if that's for my Lyme disease or what. My neck is stiff, my ankles are sore, and my hips.
20:59Asplint was first diagnosed with Lyme when she was 10 years old. A few years later, the left side of her face stopped moving. A residual effect from the disease is still noticeable today. Let's see your smile. It's still a little off, and then if I raise my eyebrows, it just doesn't move. We see people with facial palsies. We see little kids with swollen knees. We see people with Lyme rashes. So it alters people's behavior and activities. The problem on Nantucket can be traced back to 1926, when locals voted to import two female deer to the island to give a lone buck company. As the deer population grew, so did the ticks.
21:45On top of that, by the 1950s, half the land on the island was put into conservation. The untamed brush and wild grasslands create an ideal ecosystem for Lyme's host to thrive. We have a problem with tick-borne disease because we engineered the environment to maximize the number of ticks and to maximize the number of mice that are the best host of Lyme disease. And it came back and bit us. Literally. A trip at age 11 to the Galapagos Islands sparked Esfeldt's lifelong obsession with evolution. In 2013, he was the first to propose that CRISPR, a revolutionary technology that enables scientists to edit DNA, could be used to change a species' genetics in perpetuity, hacking the laws of inheritance.
22:32I mean, it's not like we want a fitness advantage. This idea led to the project they call Mice Against Ticks in the sculpting evolution lab Esvelt runs at MIT. For the last nine years, he and researcher Joanna Buckthold have been studying whether they could add a gene for an antibody that prevents Lyme infection to a mouse embryo that, as we see here, has progressed into two cells. Is it going to be into one of those cells or both of them? So our technique involves injecting both cells to maximize the likelihood that we get the antibody gene in their DNA. Buckthall and embryologist Zach Hill showed us how they genetically engineer lab mice.
23:15He's going to actually inject through the plasma membrane and into the nucleus for both of these cells. How are you at darts? Not very good. But you're going to hit the center of this. Oh yeah, okay. So I already have an embryo set up on the dish here. So I'm just trying to find the nucleus here. It is amazing to see this. So that little burst that you can see in the nucleus is when he's actually injecting the genome engineering tools directly into the nucleus where the DNA is. The injection mix contains both the antibody gene and CRISPR, which acts like molecular scissors. After CRISPR finds and cuts the targeted area of DNA, the cell inserts the gene into the mouse's genetic code.
24:04When this mouse is born, it will be immune to Lyme disease, and so will its children. If I get a polio vaccine, my kids aren't going to be immune to polio unless they get the vaccine too. That's exactly right. So this is a heritable immunization. What do you mean by that? What we're actually doing is we're encoding immunity so that that immunity is passed on generationally, and every mouse that gets the antibody gene is actually immune. Typical standard evolution happened very slowly, right? Over thousands, maybe millions of years. Are you speeding up evolution here? We are absolutely speeding up evolution, and that's precisely why we have to be careful, because we are doing things that couldn't happen naturally.
24:51The plan is to release thousands of engineered mice on Nantucket over time, starting during the winter months, when the native mouse population is low. But first, Esvelt needs community buy-in.
25:10He chose Nantucket not only for its high rate of line, but also for its tight-knit, well-educated community with the tradition of town hall democracy. I am going to call the October 23rd select board meeting to order at 5.30 p.m. We also need to start small. We saw this in action last fall when, for the 10th time, the scientists presented their latest findings to locals. So it appears that we have indeed produced the first heritably Lyme-immune laboratory mice capable of breaking the disease transmission cycle. Followed by a public Q &A. We have a huge population of field mice here. Shall we expect a larger population?
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25:52Having had Lyme disease twice, I thought, what a cool idea. But mice are kind of the foundation of the food chain. So tinkering with the food chain makes me a little cautious. How long before it's actually going to take effect and keep me from getting Lyme disease again? That's a great question. When you're in these meetings, what's that been like? Some people are really gung-ho about this. Some people have deep reservations. But what I found heartening about this, and Nantucket in particular, is that pretty much everyone agrees that this is how we should go about developing these kinds of technologies.
26:32That it should not just be scientists in their laboratories, get a clever idea, and then boom, it's there. Dr. Timothy Lepre says he's supportive of the proposal. Right here. But as an avid falconer, he wants more testing to be done to ensure there won't be unintended consequences to the island's ecosystem. Could a change in the field mouse lead to a change in the hawk? Well, that's the question. I don't think so. But I think that has to be shown. Do you worry about fooling around with Mother Nature? Absolutely. But on the other hand, I'm not terribly fond of Mother Nature if she's going to give my kids disease.
27:11All of technology is saying to Mother Nature, you're beautiful and we appreciate you very much and we need to conserve you, but we're not always happy with the way things work naturally. And so we're going to change it. But in this case, you're changing the environment for everybody. This is, I agree, different because it's hard for individuals to opt out. And I think that means we need to do the science differently because we need to ensure that people have a voice early enough to actually influence the direction that the technology has developed. If federal and state regulators agree, the team plans to first release the engineered mice in a small field trial on a private island so they can better understand the ecological impacts before any potential experiments on Nantucket.
28:01What is the home run for you? I think it's a field trial that works. It's something that allows us to dramatically reduce the fraction of ticks that are infected, that doesn't have anything obviously go wrong with the ecosystem. And then the community has a good discussion, and then they decide. And I think there's benefits, as we discussed, even if they say no, and then we walk away.
28:34Earlier this year, we reported on one of the most remarkable and mysterious migrations in the natural world happening every spring from Mexico to the United States. Tens of millions of monarch butterflies are on an epic aerial journey home. They've spent the winter hanging out in trees in a forest on a remote mountain in Mexico, resting up after flying all the way from Canada and the northern U.S. where they were born. It's believed monarchs have been making this journey for thousands of years, but there's a lot fewer of them than there used to be. The population in Mexico has declined 70 % in the last 30 years.
29:12We arrived there in February, just in time to watch the monarchs emerge from their slumber and begin to take flight. The monarchs come to these mountains in Michoacan in central Mexico starting in late October. Do you still get excited going up to see them? Every time. There's no substitutes. One of our guides, Jorge Rickards, is the director of the non-profit World Wildlife Fund in Mexico. We're going to leave the horses, walk a little bit, very, very carefully and very quietly so we won't disturb the butterflies. The monarchs roost in patches of fir and pine trees 11 ,000 feet up. There are some 66 million of them here, but it's hard to see them at first.
30:05There are what appear to be clumps of dead leaves hanging from sagging branches. But those are butterflies, tens of thousands of them, clustered together in trees all around. There's so many of them on the branches of the trees that the branches are all pointing toward the ground. Imagine the likeness of a butterfly, and there are so many of them here that they actually bend the trees. And they like the firs because they have so many little leaves or spicules, so there's lots of surface to cling on to. The monarchs are in a kind of hibernation. On the way here, they've fattened up on nectar, which helps them survive and rest through the long winter months.
30:47The climate on this mountain is ideal. The canopy of trees protects the butterflies from storms, and though the air is cool, it's relatively humid, so they stay hydrated. The clusters are so drab when you're looking at them because they have their wings closed. In many butterflies, the underside is drab or less lightly colored, and that happens in nature a lot. So it's not very inviting. It wouldn't be inviting to a predator. Why are we whispering? They are very sensitive to sound. They are also sensitive to CO2. So the less we talk, the better. They relate that with a predator. As other mammals.
31:27So they can sense like a mouse breathing. Or a bird. A bird breathing. That is right. On the forest floor, all around us, monarchs litter the ground. but most are not dead. They've just fallen from trees during the night, and their muscles are too cold for them to fly. Cup them in your hands. You can revive them with your breath. They need a certain temperature to get their wing muscles back. They are very, very vulnerable when they're on the floor. And the birds know that, and the mice know that. That's almost ready. There you go. Come on, little buddy. Maybe a little more.
32:13There you go. He likes you. Wow. When the sun begins to hit the trees, flashes of orange appear. The monarchs are warming and slowly opening their wings. It really is the day warmed up. We're going to see more activities. Cort Whalen has been bringing tour groups here and photographing monarchs for more than 20 years.
32:39He shows us a spot where some butterflies have taken flight. Then, after a few minutes, suddenly, the air is filled with them. This is extraordinary. This is it. This is what it's all about. This is, uh, nature knows when to put on a show. and how to put on a shell. Why have they all now just suddenly taken off? So it's a warm day, we're getting a lot of sunlight, so we're just ramping up, ramping up. I mean, what's insane is it's not just over here, it's over there, it's over there. I mean. That's extraordinary. But yeah, it's all the heat, it's all the sun. You can actually hear the sound of butterfly wings.
33:22Yeah. Let's just be quiet for a second.
33:39Look at that, look at that up there. Oh my gosh. Whoa. This is about as good as it possibly gets.
33:50It's like a snow globe of monarchs. You got a butterfly on you. Oh, there we go. It's still something of a mystery how these monarchs manage to get here. Most only live about a month. They spend their short lives eating and mating, and females lay eggs. But in late summer and early fall, what's called a supergeneration of monarchs appear. Hatched as caterpillars, they transform into chrysalises. And then, after a week or two, emerges butterflies. And that's when they do something extraordinary. With winter coming, they sense the shorter days and changing temperatures and suppress a key reproductive hormone, a process called diapause, which helps them conserve their energy and live up to nine months, nine times longer than most monarchs.
34:40It's crazy that there's this super generation of monarchs that can make it all the way and then the rest would die off after a month. What is amazing is how they detonate this process of not developing sexual organs, but using that energy for the flight. Monarchs born west of the Rockies stay there and migrate shorter distances. It's this supergeneration, born in Canada and east of the Rockies in the northern United States, that flies to Mexico. Hundreds of millions of them join up on a journey of some 3 ,000 miles, which can take them three months or longer. To help them find their way, monarchs have circadian clocks in their antennae and navigate using internal compasses that respond to the position of the sun in the Earth's magnetic field.
35:32Why are they coming here? Well, that's a big mystery. Maybe it's a prehistoric route. Maybe it was determined by geographical conditions in terms of topography. Maybe it had to do with climate. You're talking about multiple generations who all have this exact same instinct and know where to go and all go to the exact same spot. That's one of the most magical things that can happen in the natural world. How do they know? The monarchs were discovered by researchers on this mountain range in 1975. and the Mexican government declared the area a Federal Reserve 11 years later. But for decades, illegal logging threatened the butterfly's roosting spots, which once covered as much as 45 acres.
36:22It's now down to four and a half. World Wildlife Fund has spent years trying to combat the destruction, assessing the health of the forest, measuring the size of butterfly colonies, and planting trees. They've also worked with local communities and indigenous groups to protect the land and help them profit from tourism. The good news is the forest is rebounding. Because it's just so unusual to see this. It's like almost an optical illusion because everything's beating at this weird frequency. It's like the whole world is kind of pulsing. So what are they doing here? Yeah, so this is kind of a classic mud puddling of monarch butterflies.
37:06Mud puddling? Yeah, mud puddling. It's a real scientific term. So they're mainly after hydration, but butterflies are known to need some trace elements like salts and whatnot. And it doesn't look like much, but just this little bit of water in this mud puddle is enough for them to get some water. And then what will happen is they'll return to the roost before evening. After about four months in Mexico, this supergeneration of monarchs are near the end of their long life cycle. They're finally ready to mate and migrate north to lay their eggs. They'll die before they can make it back to where they were born, and their offspring might not live long enough to get there either.
37:45But future generations will, and there's an army of people trying to help them.
37:55In Kansas, volunteers come out to catch and tag monarchs so scientists can track their migration. Good job, Dave. They're recruited by Chip Taylor, an 87-year-old ecologist who's been fascinated by monarchs since he was a child. There's over 100 ,000 species of butterflies and moths, but pretty much the only one people know are monarchs. What is it about monarch butterflies? Well, monarchs have got charisma. Wait a minute. Monarch butterflies have charisma? Well, yeah, they have charisma because they are accessible, they're large, they're beautiful, they're slow. You can catch them. It involves Canada, it involves Mexico.
38:36Taylor founded a nonprofit called Monarch Watch at the University of Kansas 30 years ago. Nice. And so far, it's helped tag more than two million of them. How do you tag a butterfly that's so delicate? This is a rough butterfly, and that has to go thousands of miles. So it's a pretty tough butterfly. It's resilient. Yeah, it's resilient. But that resilience is being tested. Monarchs returning to the U.S. need milkweed plants to lay their eggs on. It's the only source of food their newly born caterpillars will eat. But milkweed is now hard to find. It's been virtually eradicated on agricultural land because of genetically modified corn and soybean crops that allow for mass spraying of herbicides.
39:24Monarch Watch encourages people to plant milkweed in their gardens and on public land, creating what they call monarch waystations. 50 ,000 of them have been planted so far. In Mexico, those efforts have gotten noticed.
39:42Eduardo Rendon, head of World Wildlife Fund's Monarch Butterfly Program, showed us a tag he recently found. So this is one of the tags for Monarch Watch from Chip Taylor? Exactly. I find maybe 12 meters far over here. Yeah, I was measuring the colony and then I see the ground and I find this tag. But it's the only way that we can to prove that Monarch from the United States and Canada come here to overwinter. Less than 20 % of the monarchs that head out on this miraculous migration actually make it to the mountains of Michoacan. Scientists say worsening storms and rising temperatures kill off many, though this past year the number of monarchs that survived the trip nearly doubled.
40:30It was particularly welcome news in Mexico, where the butterfly's arrival in late October coincides with a deeply spiritual celebration, what's known as the Day of the Dead. That's when many here believe the souls of family and friends who died returned to visit their loved ones. And so that's why the butterflies are returning as well. Local people believe that the monarchs are the returning spirits of the dead. That is correct, yes. So who knows, maybe we are actually, you are reviving, you're helping. someone's ancestor fly back. Yes, indeed. So it's very magical.
41:20Over the past months, 60 Minutes has crisscrossed continents in search of new stories. Now, like travelers returning home, we're eager to share what we discovered along the way. We ventured to the highest mountains. Here it is. Out to sea. And along the front. Would you mind playing for us? With pleasure. We were awed by virtuosos. Look at that! Oh my God! Natural wonders. Say the other place you were thinking of. Thailand. Thailand was the other one you were going to go with. Come on! A master mentalist. Now you're freaking me out. And a machine programmed to create a masterpiece. Go to black, go to black, go to black.
42:09I don't tap! We also tapped into fun. It's all improvised. We schnadel with each other. Are you and I schnadling? We're in the process of schnadling right now. I'm Leslie Stahl. We'll be back next week with the 58th season premiere of 60 Minutes.
From the publisher
Charlie Kirk’s assassination last week has prompted a nationwide conversation on free speech, a founding principle of a Texas startup university that correspondent Jon Wertheim first reported on in November. The University of Austin has been labeled by some as
“anti-woke,” but founders, students and advisors tell Wertheim they believe they’re grounded in free speech, disrupting modern academia by fostering debate and ideological openness in their classrooms.
Researchers on Nantucket are attempting something unprecedented: using genetic engineering to curb Lyme disease, a tick-borne illness spreading across the U.S. Instead of targeting deer or ticks, they hope to release genetically altered wild mice that are immune to Lyme disease and thereby curb its transmission. CBS News chief medical correspondent Dr. Jon LaPook visits the island to meet the scientists and hear how their first-of-its-kind approach could reshape the future of disease prevention.
One of the most awe-inspiring and mysterious migrations in the natural world stretches from the United States and Canada to Mexico. This incredible spectacle involves millions of monarch butterflies embarking on a monumental aerial journey. Correspondent Anderson Cooper reports
from the mountains of Mexico, where the monarchs spend the winter months sheltering in trees before emerging in February to take flight again.
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