great speeches words that shaped the world

Great Speeches: Words that Shaped the World

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April 16, 2024

How Our Thoughts Shape the Way Spoken Words Evolve

What makes a word survive or go extinct?

By Anvita Patwardhan

Thomas Fuchs

Charles Darwin found inspiration for his theory of evolution in birds’ beaks, giant tortoise shells—and language. “The survival or preservation of certain favored words in the struggle for existence is natural selection,” he wrote in The Descent of Man in 1871.

Language gradually shifts over time. Much research examines how social and environmental factors influence language change , but very little grapples with the forces of human cognitive selection that fix certain words into the lexicon. For an extensive new study, published in the Proceedings of the National Academy of Sciences USA , scientists investigated just that.

In an experiment much like a game of telephone, thousands of participants read English-language stories and rewrote them to be read by other participants, who then rewrote them for others. Only certain words from the first stories survived in the final versions. Researchers analyzed the word types speakers consistently favored, theorizing that such preferences drive language change over time. The scientists also separately analyzed two large collections of English historical texts from the past two centuries, containing more than 40 billion words—again seeing only certain types survive.

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The results converged to show three properties that give words an “evolutionary advantage” by helping them stick in the brain: First, words typically acquired at an early age (such as “hand,” “uncle” or “today”) are stabler. Next, concrete words linger better than abstract ones: “dog” persists longer than “animal,” which persists longer than “organism.” Lastly, emotionally exciting words—whether negative or positive—tend to endure.

Early language-evolution models assumed that language becomes increasingly complex over time. But Indiana University Bloomington cognitive scientist and study co-author Fritz Breithaupt says the new study supports a more recent theory that language ultimately gets more efficient and easier to understand. Still, as the study notes, “the English language is not baby talk.” Breithaupt explains: “Yes, we shift toward simple language, but then we also grab complex language that we need.” New words that address the intricacies of modern life may somewhat balance out this shift.

The proposed trend toward “simpler” language is controversial. Columbia University linguist John McWhorter more or less agrees with the study’s results about evolutionary advantages within language. He questions, however, implications regarding the overall efficiency of English—a language he says contains things like “needlessly complex” grammatical vestiges. “There are about five ways to indicate the future in English,” he says. “I pity anybody who doesn’t grow up with it natively” and wants to learn it.

Study lead author Ying Li, a psychologist at the Chinese Academy of Sciences and a non-native English speaker, notes that English had even more perplexing grammar in the past. McWhorter, Li supposes, “would complain more if he traveled back 800 years ago.”

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The Evolving Danger of the New Bird Flu

An unusual outbreak of the disease has spread to dairy herds in multiple u.s. states..

This transcript was created using speech recognition software. While it has been reviewed by human transcribers, it may contain errors. Please review the episode audio before quoting from this transcript and email [email protected] with any questions.

From “The New York Times,” I’m Sabrina Tavernise, and this is “The Daily.”

[MUSIC PLAYING]

The outbreak of bird flu that is tearing through the nation’s poultry farms is the worst in US history. But scientists say it’s now starting to spread into places and species it’s never been before.

Today, my colleague, Emily Anthes, explains.

It’s Monday, April 22.

Emily, welcome back to the show.

Thanks for having me. Happy to be here.

So, Emily, we’ve been talking here on “The Daily” about prices of things and how they’ve gotten so high, mostly in the context of inflation episodes. And one of the items that keeps coming up is eggs. Egg prices were through the roof last year, and we learned it was related to this. Avian flu has been surging in the United States. You’ve been covering this. Tell us what’s happening.

Yes, so I have been covering this virus for the last few years. And the bird flu is absolutely tearing through poultry flocks, and that is affecting egg prices. That’s a concern for everyone, for me and for my family. But when it comes to scientists, egg prices are pretty low on their list of concerns. Because they see this bird flu virus behaving differently than previous versions have. And they’re getting nervous, in particular, about the fact that this virus is reaching places and species where it’s never been before.

OK, so bird flu, though, isn’t new. I mean I remember hearing about cases in Asia in the ‘90s. Remind us how it began.

Bird flu refers to a bunch of different viruses that are adapted to spread best in birds. Wild water birds, in particular, are known for carrying these viruses. And flu viruses are famous for also being shapeshifters. So they’re constantly swapping genes around and evolving into new strains. And as you mentioned back in the ‘90s, a new version of bird flu, a virus known as H5N1, emerged in Asia. And it has been spreading on and off around the world since then, causing periodic outbreaks.

And how are these outbreaks caused?

So wild birds are the reservoir for the virus, which means they carry it in their bodies with them around the world as they fly and travel and migrate. And most of the time, these wild birds, like ducks and geese, don’t even get very sick from this virus. But they shed it. So as they’re traveling over a poultry farm maybe, if they happen to go to the bathroom in a pond that the chickens on the farm are using or eat some of the feed that chickens on the farm are eating, they can leave the virus behind.

And the virus can get into chickens. In some cases, it causes mild illness. It’s what’s known as low pathogenic avian influenza. But sometimes the virus mutates and evolves, and it can become extremely contagious and extremely fatal in poultry.

OK, so the virus comes through wild birds, but gets into farms like this, as you’re describing. How have farms traditionally handled outbreaks, when they do happen?

Well, because this threat isn’t new, there is a pretty well-established playbook for containing outbreaks. It’s sometimes known as stamping out. And brutally, what it means is killing the birds. So the virus is so deadly in this highly pathogenic form that it’s sort of destined to kill all the birds on a farm anyway once it gets in. So the response has traditionally been to proactively depopulate or cull all the birds, so it doesn’t have a chance to spread.

So that’s pretty costly for farmers.

It is. Although the US has a program where it will reimburse farmers for their losses. And the way these reimbursements work is they will reimburse farmers only for the birds that are proactively culled, and not for those who die naturally from the virus. And the thinking behind that is it’s a way to incentivize farmers to report outbreaks early.

So, OK, lots of chickens are killed in a way to manage these outbreaks. So we know how to deal with them. But what about now? Tell me about this new strain.

So this new version of the virus, it emerged in 2020.

After the deadly outbreak of the novel coronavirus, authorities have now confirmed an outbreak of the H5N1 strain of influenza, a kind of bird flu.

And pretty quickly it became clear that a couple things set it apart.

A bald eagle found dead at Carvins Cove has tested positive for the highly contagious bird flu.

This virus, for whatever reason, seemed very good at infecting all sorts of wild birds that we don’t normally associate with bird flu.

[BIRD CRYING]

He was kind of stepping, and then falling over, and using its wing to right itself.

Things like eagles and condors and pelicans.

We just lost a parliament of owls in Minneapolis.

Yeah, a couple of high profile nests.

And also in the past, wild birds have not traditionally gotten very sick from this virus. And this version of the virus not only spread widely through the wild bird population, but it proved to be devastating.

The washing up along the East Coast of the country from Scotland down to Suffolk.

We were hearing about mass die-offs of seabirds in Europe by the hundreds and the thousands.

And the bodies of the dead dot the island wherever you look.

Wow. OK. So then as we know, this strain, like previous ones, makes its way from wild animals to farmed animals, namely to chickens. But it’s even more deadly.

Absolutely. And in fact, it has already caused the worst bird flu outbreak in US history. So more than 90 million birds in the US have died as a result of this virus.

90 million birds.

Yes, and I should be clear that represents two things. So some of those birds are birds who naturally got infected and died from the virus. But the vast majority of them are birds that were proactively culled. What it adds up to is, is 90 million farmed birds in the US have died since this virus emerged. And it’s not just a chicken problem. Another thing that has been weird about this virus is it has jumped into other kinds of farms. It is the first time we’ve seen a bird flu virus jump into US livestock.

And it’s now been reported on a number of dairy farms across eight US states. And that’s just something that’s totally unprecedented.

So it’s showing up at Dairy farms now. You’re saying that bird flu has now spread to cows. How did that happen?

So we don’t know exactly how cows were first infected, but most scientists’ best guess is that maybe an infected wild bird that was migrating shed the virus into some cattle feed or a pasture or a pond, and cattle picked it up. The good news is they don’t seem to get nearly as sick as chickens do. They are generally making full recoveries on their own in a couple of weeks.

OK, so no mass culling of cows?

No, that doesn’t seem to be necessary at this point. But the bad news is that it’s starting to look like we’re seeing this virus spread from cow to cow. We don’t know exactly how that’s happening yet. But anytime you see cow-to-cow or mammal-to-mammal transmission, that’s a big concern.

And why is that exactly?

Well, there are a bunch of reasons. First, it could allow the outbreak to get much bigger, much faster, which might increase the risk to the food supply. And we might also expect it to increase the risk to farm workers, people who might be in contact with these sick cows.

Right now, the likelihood that a farmer who gets this virus passes it on is pretty low. But any time you see mammal-to-mammal transmission, it increases the chance that the virus will adapt and possibly, maybe one day get good at spreading between humans. To be clear, that’s not something that there’s any evidence happening in cows right now. But the fact that there’s any cow-to-cow transmission happening at all is enough to have scientists a bit concerned.

And then if we think more expansively beyond what’s happening on farms, there’s another big danger lurking out there. And that’s what happens when this virus gets into wild animals, vast populations that we can’t control.

We’ll be right back.

So, Emily, you said that another threat was the threat of flu in wild animal populations. Clearly, of course, it’s already in wild birds. Where else has it gone?

Well, the reason it’s become such a threat is because of how widespread it’s become in wild birds. So they keep reintroducing it to wild animal populations pretty much anywhere they go. So we’ve seen the virus repeatedly pop up in all sorts of animals that you might figure would eat a wild bird, so foxes, bobcats, bears. We actually saw it in a polar bear, raccoons. So a lot of carnivores and scavengers.

The thinking is that these animals might stumble across a sick or dead bird, eat it, and contract the virus that way. But we’re also seeing it show up in some more surprising places, too. We’ve seen the virus in a bottle-nosed dolphin, of all places.

And most devastatingly, we’ve seen enormous outbreaks in other sorts of marine mammals, especially sea lions and seals.

So elephant seals, in particular in South America, were just devastated by this virus last fall. My colleague Apoorva Mandavilli and I were talking to some scientists in South America who described to us what they called a scene from hell, of walking out onto a beach in Argentina that is normally crowded with chaotic, living, breathing, breeding, elephant seals — and the beach just being covered by carcass, after carcass, after carcass.

Mostly carcasses of young newborn pups. The virus seemed to have a mortality rate of 95 percent in these elephant seal pups, and they estimated that it might have killed more than 17,000 of the pups that were born last year. So almost the entire new generation of this colony. These are scientists that have studied these seals for decades. And they said they’ve never seen anything like it before.

And why is it so far reaching, Emily? I mean, what explains these mass die-offs?

There are probably a few explanations. One is just how much virus is out there in the environment being shed by wild birds into water and onto beaches. These are also places that viruses like this haven’t been before. So it’s reaching elephant seals and sea lions in South America that have no prior immunity.

There’s also the fact that these particular species, these sea lions and seals, tend to breed in these huge colonies all crowded together on beaches. And so what that means is if a virus makes its way into the colony, it’s very conducive conditions for it to spread. And scientists think that that’s actually what’s happening now. That it’s not just that all these seals are picking up the virus from individual birds, but that they’re actually passing it to each other.

So basically, this virus is spreading to places it’s never been before, kind of virgin snow territory, where animals just don’t have the immunity against it. And once it gets into a population packed on a beach, say, of elephant seals, it’s just like a knife through butter.

Absolutely. And an even more extreme example of that is what we’re starting to see happen in Antarctica, where there’s never been a bird flu outbreak before until last fall, for the first time, this virus reached the Antarctic mainland. And we are now seeing the virus move through colonies of not only seabirds and seals, but penguin colonies, which have not been exposed to these viruses before.

And it’s too soon to say what the toll will be. But penguins also, of course, are known for breeding in these large colonies.

Probably. don’t have many immune defenses against this virus, and of course, are facing all these other environmental threats. And so there’s a lot of fear that you add on the stress of a bird flu virus, and it could just be a tipping point for penguins.

Emily, at this point, I’m kind of wondering why more people aren’t talking about this. I mean, I didn’t know any of this before having this conversation with you, and it feels pretty worrying.

Well, a lot of experts and scientists are talking about this with rising alarm and in terms that are quite stark. They’re talking about the virus spreading through wild animal populations so quickly and so ferociously that they’re calling it an ecological disaster.

But that’s a disaster that sometimes seems distant from us, both geographically, we’re talking about things that are happening maybe at the tip of Argentina or in Antarctica. And also from our concerns of our everyday lives, what’s happening in Penguins might not seem like it has a lot to do with the price of a carton of eggs at the grocery store. But I think that we should be paying a lot of attention to how this virus is moving through animal populations, how quickly it’s moving through animal populations, and the opportunities that it is giving the virus to evolve into something that poses a much bigger threat to human health.

So the way it’s spreading in wild animals, even in remote places like Antarctica, that’s important to watch, at least in part because there’s a real danger to people here.

So we know that the virus can infect humans, and that generally it’s not very good at spreading between humans. But the concern all along has been that if this virus has more opportunities to spread between mammals, it will get better at spreading between them. And that seems to be what is happening in seals and sea lions. Scientists are already seeing evidence that the virus is adapting as it passes from marine mammal to marine mammal. And that could turn it into a virus that’s also better at spreading between people.

And if somebody walks out onto a beach and touches a dead sea lion, if their dog starts playing with a sea lion carcass, you could imagine that this virus could make its way out of marine mammals and into the human population. And if it’s this mammalian adapted version of the virus that makes its way out, that could be a bigger threat to human health.

So the sheer number of hosts that this disease has, the more opportunity it has to mutate, and the more chance it has to mutate in a way that would actually be dangerous for people.

Yes, and in particular, the more mammalian hosts. So that gives the virus many more opportunities to become a specialist in mammals instead of a specialist in birds, which is what it is right now.

Right. I like that, a specialist in mammals. So what can we do to contain this virus?

Well, scientists are exploring new options. There’s been a lot of discussion about whether we should start vaccinating chickens in the US. The government, USDA labs, have been testing some poultry vaccines. It’s probably scientifically feasible. There are challenges there, both in terms of logistics — just how would you go about vaccinating billions of chickens every year. There are also trade questions. Traditionally, a lot of countries have not been willing to accept poultry products from countries that vaccinate their poultry.

And there’s concern about whether the virus might spread undetected in flocks that are vaccinated. So as we saw with COVID, the vaccine can sometimes stop you from getting sick, but it doesn’t necessarily stop infection. And so countries are worried they might unknowingly import products that are harboring the virus.

And what about among wild animals? I mean, how do you even begin to get your head around that?

Yeah, I mean, thinking about vaccinating wild animals maybe makes vaccinating all the chickens in the US look easy. There has been some discussion of limited vaccination campaigns, but that’s not feasible on a global scale. So unfortunately, the bottom line is there isn’t a good way to stop spread in wild animals. We can try to protect some vulnerable populations, but we’re not going to stop the circulation of this virus.

So, Emily, we started this conversation with a kind of curiosity that “The Daily” had about the price of eggs. And then you explained the bird flu to us. And then somehow we ended up learning about an ecological disaster that’s unfolding all around us, and potentially the source of the next human pandemic. That is pretty scary.

It is scary, and it’s easy to get overwhelmed by it. And I feel like I should take a step back and say none of this is inevitable. None of this is necessarily happening tomorrow. But this is why scientists are concerned and why they think it’s really important to keep a very close eye on what’s happening both on farms and off farms, as this virus spreads through all sorts of animal populations.

One thing that comes up again and again and again in my interviews with people who have been studying bird flu for decades, is how this virus never stops surprising them. And sometimes those are bad surprises, like these elephant seal die-offs, the incursions into dairy cattle. But there are some encouraging signs that have emerged recently. We’re starting to see some early evidence that some of the bird populations that survived early brushes with this virus might be developing some immunity. So that’s something that maybe could help slow the spread of this virus in animal populations.

We just don’t entirely know how this is going to play out. Flu is a very difficult, wily foe. And so that’s one reason scientists are trying to keep such a close, attentive eye on what’s happening.

Emily, thank you.

Thanks for having me.

Here’s what else you should know today.

On this vote, the yeas are 366 and the nays are 58. The bill is passed.

On Saturday, in four back-to-back votes, the House voted resoundingly to approve a long-stalled package of aid to Ukraine, Israel and other American allies, delivering a major victory to President Biden, who made aid to Ukraine one of his top priorities.

On this vote, the yeas are 385, and the no’s are 34 with one answering present. The bill is passed without objection.

The House passed the component parts of the $95 billion package, which included a bill that could result in a nationwide ban of TikTok.

On this vote, the yeas are 311 and the nays are 112. The bill is passed.

Oh, one voting present. I missed it, but thank you.

In a remarkable breach of custom, Democrats stepped in to supply the crucial votes to push the legislation past hard-line Republican opposition and bring it to the floor.

The House will be in order.

The Senate is expected to pass the legislation as early as Tuesday.

Today’s episode was produced by Rikki Novetsky, Nina Feldman, Eric Krupke, and Alex Stern. It was edited by Lisa Chow and Patricia Willens; contains original music by Marion Lozano, Dan Powell, Rowan Niemisto, and Sophia Lanman; and was engineered by Chris Wood. Our theme music is by Jim Brunberg and Ben Landsverk of Wonderly. Special thanks to Andrew Jacobs.

That’s it for “The Daily.” I’m Sabrina Tavernise. See you tomorrow.

• April 24, 2024   •   32:18 Is $60 Billion Enough to Save Ukraine?
• April 23, 2024   •   30:30 A Salacious Conspiracy or Just 34 Pieces of Paper?
• April 22, 2024   •   24:30 The Evolving Danger of the New Bird Flu
• April 19, 2024   •   30:42 The Supreme Court Takes Up Homelessness
• April 18, 2024   •   30:07 The Opening Days of Trump’s First Criminal Trial
• April 17, 2024   •   24:52 Are ‘Forever Chemicals’ a Forever Problem?
• April 16, 2024   •   29:29 A.I.’s Original Sin
• April 15, 2024   •   24:07 Iran’s Unprecedented Attack on Israel
• April 14, 2024   •   46:17 The Sunday Read: ‘What I Saw Working at The National Enquirer During Donald Trump’s Rise’
• April 12, 2024   •   34:23 How One Family Lost $900,000 in a Timeshare Scam
• April 11, 2024   •   28:39 The Staggering Success of Trump’s Trial Delay Tactics
• April 10, 2024   •   22:49 Trump’s Abortion Dilemma

Hosted by Sabrina Tavernise

Produced by Rikki Novetsky ,  Nina Feldman ,  Eric Krupke and Alex Stern

Edited by Lisa Chow and Patricia Willens

Original music by Marion Lozano ,  Dan Powell ,  Rowan Niemisto and Sophia Lanman

Engineered by Chris Wood

Listen and follow The Daily Apple Podcasts | Spotify | Amazon Music

The outbreak of bird flu currently tearing through the nation’s poultry is the worst in U.S. history. Scientists say it is now spreading beyond farms into places and species it has never been before.

Emily Anthes, a science reporter for The Times, explains.

On today’s episode

Emily Anthes , a science reporter for The New York Times.

Background reading

Scientists have faulted the federal response to bird flu outbreaks on dairy farms .

Here’s what to know about the outbreak.

There are a lot of ways to listen to The Daily. Here’s how.

We aim to make transcripts available the next workday after an episode’s publication. You can find them at the top of the page.

Special thanks to Andrew Jacobs .

The Daily is made by Rachel Quester, Lynsea Garrison, Clare Toeniskoetter, Paige Cowett, Michael Simon Johnson, Brad Fisher, Chris Wood, Jessica Cheung, Stella Tan, Alexandra Leigh Young, Lisa Chow, Eric Krupke, Marc Georges, Luke Vander Ploeg, M.J. Davis Lin, Dan Powell, Sydney Harper, Mike Benoist, Liz O. Baylen, Asthaa Chaturvedi, Rachelle Bonja, Diana Nguyen, Marion Lozano, Corey Schreppel, Rob Szypko, Elisheba Ittoop, Mooj Zadie, Patricia Willens, Rowan Niemisto, Jody Becker, Rikki Novetsky, John Ketchum, Nina Feldman, Will Reid, Carlos Prieto, Ben Calhoun, Susan Lee, Lexie Diao, Mary Wilson, Alex Stern, Dan Farrell, Sophia Lanman, Shannon Lin, Diane Wong, Devon Taylor, Alyssa Moxley, Summer Thomad, Olivia Natt, Daniel Ramirez and Brendan Klinkenberg.

Our theme music is by Jim Brunberg and Ben Landsverk of Wonderly. Special thanks to Sam Dolnick, Paula Szuchman, Lisa Tobin, Larissa Anderson, Julia Simon, Sofia Milan, Mahima Chablani, Elizabeth Davis-Moorer, Jeffrey Miranda, Renan Borelli, Maddy Masiello, Isabella Anderson and Nina Lassam.

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