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I'm here to tell you about the real search for alien life. Not little green humanoids arriving in shiny UFOs, although that would be nice. But it's the search for planets orbiting stars far away. Every star in our sky is a sun. And if our sun has planets -- Mercury, Venus, Earth, Mars, etc., surely those other stars sh...	{ "perplexity_score": 266.2 }
Someone who looks like me walks past you in the street. Do you think they're a mother, a refugee or a victim of oppression? Or do you think they're a cardiologist, a barrister or maybe your local politician? Do you look me up and down, wondering how hot I must get or if my husband has forced me to wear this outfit? Wha...	{ "perplexity_score": 249.8 }
I've learned some of my most important life lessons from drug dealers and gang members and prostitutes, and I've had some of my most profound theological conversations not in the hallowed halls of a seminary but on a street corner on a Friday night, at 1 a.m. That's a little unusual, since I am a Baptist minister, semi...	{ "perplexity_score": 192.9 }
So if I told you that this was the face of pure joy, would you call me crazy? I wouldn't blame you, because every time I look at this Arctic selfie, I shiver just a little bit. I want to tell you a little bit about this photograph. I was swimming around in the Lofoten Islands in Norway, just inside the Arctic Circle, a...	{ "perplexity_score": 284 }
Why do we cheat? And why do happy people cheat? And when we say "infidelity," what exactly do we mean? Is it a hookup, a love story, paid sex, a chat room, a massage with a happy ending? Why do we think that men cheat out of boredom and fear of intimacy, but women cheat out of loneliness and hunger for intimacy? And is...	{ "perplexity_score": 306 }
I'd like to have you look at this pencil. It's a thing. It's a legal thing. And so are books you might have or the cars you own. They're all legal things. The great apes that you'll see behind me, they too are legal things. Now, I can do that to a legal thing. I can do whatever I want to my book or my car. These great ...	{ "perplexity_score": 202.7 }
When I was growing up, I really liked playing hide-and-seek a lot. One time, though, I thought climbing a tree would lead to a great hiding spot, but I fell and broke my arm. I actually started first grade with a big cast all over my torso. It was taken off six weeks later, but even then, I couldn't extend my elbow, an...	{ "perplexity_score": 380.4 }
Chris Anderson: So I guess what we're going to do is we're going to talk about your life, and using some pictures that you shared with me. And I think we should start right here with this one. Okay, now who is this? Martine Rothblatt: This is me with our oldest son Eli. He was about age five. This is taken in Nigeria r...	{ "perplexity_score": 278.1 }
(Music) Dannielle Hadley: Life in Pennsylvania means just that: life without the possibility of parole. For us lifers, as we call ourselves, our only chance for release is through commutation, which has only been granted to two women since 1989, close to 30 years ago. Our song, "This Is Not Our Home," it tells of our e...	{ "perplexity_score": 328 }
I know what you're thinking: "Why does that guy get to sit down?" That's because this is radio. (Music) I tell radio stories about design, and I report on all kinds of stories: buildings and toothbrushes and mascots and wayfinding and fonts. My mission is to get people to engage with the design that they care about so ...	{ "perplexity_score": 302 }
When I was nine years old, my mom asked me what I would want my house to look like, and I drew this fairy mushroom. And then she actually built it. (Laughter) I don't think I realized this was so unusual at the time, and maybe I still haven't, because I'm still designing houses. This is a six-story bespoke home on the ...	{ "perplexity_score": 303.8 }
(Music) These bees are in my backyard in Berkeley, California. Until last year, I'd never kept bees before, but National Geographic asked me to photograph a story about them, and I decided, to be able to take compelling images, I should start keeping bees myself. And as you may know, bees pollinate one third of our foo...	{ "perplexity_score": 272.6 }
In June of 1998, Tori Murden McClure left Nags Head, North Carolina for France. That's her boat, the American Pearl. It's 23 feet long and just six feet across at its widest point. The deck was the size of a cargo bed of a Ford F-150 pickup truck. Tori and her friends built it by hand, and it weighed about 1,800 pounds...	{ "perplexity_score": 358.8 }
You may not realize this, but there are more bacteria in your body than stars in our entire galaxy. This fascinating universe of bacteria inside of us is an integral part of our health, and our technology is evolving so rapidly that today we can program these bacteria like we program computers. Now, the diagram that yo...	{ "perplexity_score": 379.2 }
Most of us think of motion as a very visual thing. If I walk across this stage or gesture with my hands while I speak, that motion is something that you can see. But there's a world of important motion that's too subtle for the human eye, and over the past few years, we've started to find that cameras can often see thi...	{ "perplexity_score": 306.2 }
I am a plant geneticist. I study genes that make plants resistant to disease and tolerant of stress. In recent years, millions of people around the world have come to believe that there's something sinister about genetic modification. Today, I am going to provide a different perspective. First, let me introduce my husb...	{ "perplexity_score": 238.5 }
On the path that American children travel to adulthood, two institutions oversee the journey. The first is the one we hear a lot about: college. Some of you may remember the excitement that you felt when you first set off for college. Some of you may be in college right now and you're feeling this excitement at this ve...	{ "perplexity_score": 271.4 }
Hi. I'm going to talk to you today about laughter, and I just want to start by thinking about the first time I can ever remember noticing laughter. This is when I was a little girl. I would've been about six. And I came across my parents doing something unusual, where they were laughing. They were laughing very, very h...	{ "perplexity_score": 275.7 }
The brain is an amazing and complex organ. And while many people are fascinated by the brain, they can't really tell you that much about the properties about how the brain works because we don't teach neuroscience in schools. And one of the reasons why is that the equipment is so complex and so expensive that it's real...	{ "perplexity_score": 325.8 }
I work with a bunch of mathematicians, philosophers and computer scientists, and we sit around and think about the future of machine intelligence, among other things. Some people think that some of these things are sort of science fiction-y, far out there, crazy. But I like to say, okay, let's look at the modern human ...	{ "perplexity_score": 274.9 }
These dragons from deep time are incredible creatures. They're bizzarre, they're beautiful, and there's very little we know about them. These thoughts were going through my head when I looked at the pages of my first dinosaur book. I was about five years old at the time, and I decided there and then that I would become...	{ "perplexity_score": 226.9 }
Growing up, I didn't always understand why my parents made me follow the rules that they did. Like, why did I really have to mow the lawn? Why was homework really that important? Why couldn't I put jelly beans in my oatmeal? My childhood was abound with questions like this. Normal things about being a kid and realizing...	{ "perplexity_score": 230.4 }
Virtual reality started for me in sort of an unusual place. It was the 1970s. I got into the field very young: I was seven years old. And the tool that I used to access virtual reality was the Evel Knievel stunt cycle. This is a commercial for that particular item: (Video) Voice-over: What a jump! Evel's riding the ama...	{ "perplexity_score": 217.1 }
My first love was for the night sky. Love is complicated. You're looking at a fly-through of the Hubble Space Telescope Ultra-Deep Field, one of the most distant images of our universe ever observed. Everything you see here is a galaxy, comprised of billions of stars each. And the farthest galaxy is a trillion, trillio...	{ "perplexity_score": 314 }
To be honest, by personality, I'm just not much of a crier. But I think in my career that's been a good thing. I'm a civil rights lawyer, and I've seen some horrible things in the world. I began my career working police abuse cases in the United States. And then in 1994, I was sent to Rwanda to be the director of the U...	{ "perplexity_score": 257 }
Well, you know, sometimes the most important things come in the smallest packages. I am going to try to convince you, in the 15 minutes I have, that microbes have a lot to say about questions such as, "Are we alone?" and they can tell us more about not only life in our solar system but also maybe beyond, and this is wh...	{ "perplexity_score": 250.6 }
This is a story about capitalism. It's a system I love because of the successes and opportunities it's afforded me and millions of others. I started in my 20s trading commodities, cotton in particular, in the pits, and if there was ever a free market free-for-all, this was it, where men wearing ties but acting like gla...	{ "perplexity_score": 230.7 }
This is a kindergarten we designed in 2007. We made this kindergarten to be a circle. It's a kind of endless circulation on top of the roof. If you are a parent, you know that kids love to keep making circles. This is how the rooftop looks. And why did we design this? The principal of this kindergarten said, "No, I don...	{ "perplexity_score": 242.2 }
Today, I am going to talk about anger. When I was 11, seeing some of my friends leaving the school because their parents could not afford textbooks made me angry. When I was 27, hearing the plight of a desperate slave father whose daughter was about to be sold to a brothel made me angry. At the age of 50, lying on the ...	{ "perplexity_score": 249.1 }
I am a Hazara, and the homeland of my people is Afghanistan. Like hundreds of thousands of other Hazara kids, I was born in exile. The ongoing persecution and operation against the Hazaras forced my parents to leave Afghanistan. This persecution has had a long history going back to the late 1800s, and the rule of King ...	{ "perplexity_score": 241 }
I'd like to take you on the epic quest of the Rosetta spacecraft. To escort and land the probe on a comet, this has been my passion for the past two years. In order to do that, I need to explain to you something about the origin of the solar system. When we go back four and a half billion years, there was a cloud of ga...	{ "perplexity_score": 216.3 }
It would be nice to be objective in life, in many ways. The problem is that we have these color-tinted glasses as we look at all kinds of situations. For example, think about something as simple as beer. If I gave you a few beers to taste and I asked you to rate them on intensity and bitterness, different beers would o...	{ "perplexity_score": 251.3 }
Imagine you're in a bar, or a club, and you start talking, and after a while, the question comes up, "So, what do you do for work?" And since you think your job is interesting, you say, "I'm a mathematician." (Laughter) And inevitably, during that conversation one of these two phrases come up: A) "I was terrible at mat...	{ "perplexity_score": 275.3 }
I dedicated the past two years to understanding how people achieve their dreams. When we think about the dreams we have, and the dent we want to leave in the universe, it is striking to see how big of an overlap there is between the dreams that we have and projects that never happen. (Laughter) So I'm here to talk to y...	{ "perplexity_score": 287.9 }
When I was a kid, the disaster we worried about most was a nuclear war. That's why we had a barrel like this down in our basement, filled with cans of food and water. When the nuclear attack came, we were supposed to go downstairs, hunker down, and eat out of that barrel. Today the greatest risk of global catastrophe d...	{ "perplexity_score": 213.4 }
People back home call me a heckler, a troublemaker, an irritant, a rebel, an activist, the voice of the people. But that wasn't always me. Growing up, I had a nickname. They used to call me Softy, meaning the soft, harmless boy. Like every other human being, I avoided trouble. In my childhood, they taught me silence. D...	{ "perplexity_score": 250.2 }
G'day, my name's Kevin. I'm from Australia. I'm here to help. (Laughter) Tonight, I want to talk about a tale of two cities. One of those cities is called Washington, and the other is called Beijing. Because how these two capitals shape their future and the future of the United States and the future of China doesn't ju...	{ "perplexity_score": 228.5 }
(Clicking) I was born with bilateral retinoblastoma, retinal cancer. My right eye was removed at seven months of age. I was 13 months when they removed my left eye. The first thing I did upon awakening from that last surgery was to climb out of my crib and begin wandering around the intensive care nursery, probably loo...	{ "perplexity_score": 346.2 }
I'd like to tell you a story about death and architecture. A hundred years ago, we tended to die of infectious diseases like pneumonia, that, if they took hold, would take us away quite quickly. We tended to die at home, in our own beds, looked after by family, although that was the default option because a lot of peop...	{ "perplexity_score": 188.9 }
When I wrote my memoir, the publishers were really confused. Was it about me as a child refugee, or as a woman who set up a high-tech software company back in the 1960s, one that went public and eventually employed over 8,500 people? Or was it as a mother of an autistic child? Or as a philanthropist that's now given aw...	{ "perplexity_score": 259.8 }
I'm a potter, which seems like a fairly humble vocation. I know a lot about pots. I've spent about 15 years making them. One of the things that really excites me in my artistic practice and being trained as a potter is that you very quickly learn how to make great things out of nothing; that I spent a lot of time at my...	{ "perplexity_score": 276 }
Tonight, I'm going to try to make the case that inviting a loved one, a friend or even a stranger to record a meaningful interview with you just might turn out to be one of the most important moments in that person's life, and in yours. When I was 22 years old, I was lucky enough to find my calling when I fell into mak...	{ "perplexity_score": 268.9 }
"Where are you from?" said the pale, tattooed man. "Where are you from?" It's September 21, 2001, 10 days after the worst attack on America since World War II. Everyone wonders about the next plane. People are looking for scapegoats. The president, the night before, pledges to "bring our enemies to justice or bring jus...	{ "perplexity_score": 341.5 }
Let me show you something. (Video) Girl: Okay, that's a cat sitting in a bed. The boy is petting the elephant. Those are people that are going on an airplane. That's a big airplane. Fei-Fei Li: This is a three-year-old child describing what she sees in a series of photos. She might still have a lot to learn about this ...	{ "perplexity_score": 301 }
You're looking at a woman who was publicly silent for a decade. Obviously, that's changed, but only recently. It was several months ago that I gave my very first major public talk at the Forbes 30 Under 30 summit: 1,500 brilliant people, all under the age of 30. That meant that in 1998, the oldest among the group were ...	{ "perplexity_score": 262.2 }
I'm thrilled to be here tonight to share with you something we've been working on for over two years, and it's in the area of additive manufacturing, also known as 3D printing. You see this object here. It looks fairly simple, but it's quite complex at the same time. It's a set of concentric geodesic structures with li...	{ "perplexity_score": 232.7 }
We are built out of very small stuff, and we are embedded in a very large cosmos, and the fact is that we are not very good at understanding reality at either of those scales, and that's because our brains haven't evolved to understand the world at that scale. Instead, we're trapped on this very thin slice of perceptio...	{ "perplexity_score": 285.3 }
How many people here have heard of PMS? Everybody, right? Everyone knows that women go a little crazy right before they get their period, that the menstrual cycle throws them onto an inevitable hormonal roller coaster of irrationality and irritability. There's a general assumption that fluctuations in reproductive horm...	{ "perplexity_score": 247.9 }
I cannot forget them. Their names were Aslan, Alik, Andrei, Fernanda, Fred, Galina, Gunnhild, Hans, Ingeborg, Matti, Natalya, Nancy, Sheryl, Usman, Zarema, and the list is longer. For many, their existence, their humanity, has been reduced to statistics, coldly recorded as "security incidents." For me, they were collea...	{ "perplexity_score": 248.8 }
I have a confession to make. I'm a business professor whose ambition has been to help people learn to lead. But recently, I've discovered that what many of us think of as great leadership does not work when it comes to leading innovation. I'm an ethnographer. I use the methods of anthropology to understand the question...	{ "perplexity_score": 260.7 }
Hello. I'm a toy developer. With a dream of creating new toys that have never been seen before, I began working at a toy company nine years ago. When I first started working there, I proposed many new ideas to my boss every day. However, my boss always asked if I had the data to prove it would sell, and asked me to thi...	{ "perplexity_score": 292.5 }
We need to change the culture in our jails and prisons, especially for young inmates. New York state is one of only two in the U.S. that automatically arrests and tries 16- to 17-year-olds as adults. This culture of violence takes these young people and puts them in a hostile environment, and the correctional officers ...	{ "perplexity_score": 236.2 }
Today I'm going to speak to you about the last 30 years of architectural history. That's a lot to pack into 18 minutes. It's a complex topic, so we're just going to dive right in at a complex place: New Jersey. Because 30 years ago, I'm from Jersey, and I was six, and I lived there in my parents' house in a town called...	{ "perplexity_score": 246.9 }
Traditional prescriptions for growth in Africa are not working very well. After one trillion dollars in African development-related aid in the last 60 years, real per capita income today is lower than it was in the 1970s. Aid is not doing too well. In response, the Bretton Woods institutions -- the IMF and the World Ba...	{ "perplexity_score": 428.3 }
About 12 years ago, I gave up my career in banking to try to make the world a safer place. This involved a journey into national and global advocacy and meeting some of the most extraordinary people in the world. In the process, I became a civil society diplomat. Civil society diplomats do three things: They voice the ...	{ "perplexity_score": 231.2 }
Twenty-five years ago, scientists at CERN created the World Wide Web. Since then, the Internet has transformed the way we communicate, the way we do business, and even the way we live. In many ways, the ideas that gave birth to Google, Facebook, Twitter, and so many others, have now really transformed our lives, and th...	{ "perplexity_score": 208.9 }
My name is Harry Baker. Harry Baker is my name. If your name was Harry Baker, then our names would be the same. (Laughter) It's a short introductory part. Yeah, I'm Harry. I study maths. I write poetry. So I thought I'd start with a love poem about prime numbers. (Laughter) This is called "59." I was going to call it "...	{ "perplexity_score": 521.5 }
(Rainforest noises) In the summer of 2011, as a tourist, I visited the rainforests of Borneo for the very first time, and as you might imagine, it was the overwhelming sounds of the forest that struck me the most. There's this constant cacophony of noise. Some things actually do stick out. For example, this here is a b...	{ "perplexity_score": 201.1 }
As a software developer and technologist, I've worked on a number of civic technology projects over the years. Civic tech is sometimes referred to as tech for good, using technology to solve humanitarian problems. This is in 2010 in Uganda, working on a solution that allowed local populations to avoid government survei...	{ "perplexity_score": 260.2 }
I'd like to start my performance by saying 90 percent of everything is crap. (Laughter) It's called Sturgeon's law, and what that means is that the majority of anything is always bad. I have a giraffe here. I'm going to throw the giraffe behind my back and whoever catches it is going to help me on this next thing. Sir,...	{ "perplexity_score": 314.2 }
Six thousand miles of road, 600 miles of subway track, 400 miles of bike lanes and a half a mile of tram track, if you've ever been to Roosevelt Island. These are the numbers that make up the infrastructure of New York City. These are the statistics of our infrastructure. They're the kind of numbers you can find releas...	{ "perplexity_score": 253.3 }
One of the first patients I had to see as a pediatrician was Sol, a beautiful month-old baby who was admitted with signs of a severe respiratory infection. Until then, I had never seen a patient worsen so fast. In just two days she was connected to a respirator and on the third day she died. Sol had whooping cough. Aft...	{ "perplexity_score": 204.8 }
While preparing for my talk I was reflecting on my life and trying to figure out where exactly was that moment when my journey began. A long time passed by, and I simply couldn't figure out the beginning or the middle or the end of my story. I always used to think that my beginning was one afternoon in my community whe...	{ "perplexity_score": 288.1 }
We humans have always been very concerned about the health of our bodies, but we haven't always been that good at figuring out what's important. Take the ancient Egyptians, for example: very concerned about the body parts they thought they'd need in the afterlife, but they left some parts out. This part, for example. A...	{ "perplexity_score": 265.6 }
An 18-year-old, African-American male joined the United States Air Force and was assigned to Mountain Home Air Force Base and was a part of the air police squadron. Upon first arriving there, the first goal that I had was for me to identify an apartment, so I could bring my wife and my new baby, Melanie, out to join me...	{ "perplexity_score": 201.4 }
I am multidisciplinary. As a scientist, I've been a crew commander for a NASA Mars simulation last year, and as an artist, I create multicultural community art all over the planet. And recently, I've actually been combining both. But let me first talk a little more about that NASA mission. This is the HI-SEAS program. ...	{ "perplexity_score": 191.6 }
As an Arab female photographer, I have always found ample inspiration for my projects in personal experiences. The passion I developed for knowledge, which allowed me to break barriers towards a better life was the motivation for my project I Read I Write. Pushed by my own experience, as I was not allowed initially to ...	{ "perplexity_score": 220.4 }
In the mid-'90s, the CDC and Kaiser Permanente discovered an exposure that dramatically increased the risk for seven out of 10 of the leading causes of death in the United States. In high doses, it affects brain development, the immune system, hormonal systems, and even the way our DNA is read and transcribed. Folks wh...	{ "perplexity_score": 220.7 }
I grew up with my identical twin, who was an incredibly loving brother. Now, one thing about being a twin is that it makes you an expert at spotting favoritism. If his cookie was even slightly bigger than my cookie, I had questions. And clearly, I wasn't starving. (Laughter) When I became a psychologist, I began to not...	{ "perplexity_score": 297.6 }
Today I want to talk to you about the mathematics of love. Now, I think that we can all agree that mathematicians are famously excellent at finding love. But it's not just because of our dashing personalities, superior conversational skills and excellent pencil cases. It's also because we've actually done an awful lot ...	{ "perplexity_score": 264 }
What's the fastest growing threat to Americans' health? Cancer? Heart attacks? Diabetes? The answer is actually none of these; it's Alzheimer's disease. Every 67 seconds, someone in the United States is diagnosed with Alzheimer's. As the number of Alzheimer's patients triples by the year 2050, caring for them, as well ...	{ "perplexity_score": 219.8 }
On Mondays and Thursdays, I learn how to die. I call them my terminal days. My wife Fernanda doesn't like the term, but a lot of people in my family died of melanoma cancer and my parents and grandparents had it. And I kept thinking, one day I could be sitting in front of a doctor who looks at my exams and says, "Ricar...	{ "perplexity_score": 226 }
So infectious diseases, right? Infectious diseases are still the main cause of human suffering and death around the world. Every year, millions of people die of diseases such as T.B., malaria, HIV, around the world and even in the United States. Every year, thousands of Americans die of seasonal flu. Now of course, hum...	{ "perplexity_score": 256.7 }
I'm an artist and I cut books. This is one of my first book works. It's called "Alternate Route to Knowledge." I wanted to create a stack of books so that somebody could come into the gallery and think they're just looking at a regular stack of books, but then as they got closer they would see this rough hole carved in...	{ "perplexity_score": 226.5 }
Some years ago, I stumbled across a simple design exercise that helps people understand and solve complex problems, and like many of these design exercises, it kind of seems trivial at first, but under deep inspection, it turns out that it reveals unexpected truths about the way that we collaborate and make sense of th...	{ "perplexity_score": 307.2 }
You've heard of your I.Q., your general intelligence, but what's your Psy-Q? How much do you know about what makes you tick, and how good are you at predicting other people's behavior or even your own? And how much of what you think you know about psychology is wrong? Let's find out by counting down the top 10 myths of...	{ "perplexity_score": 281 }
When I was invited to give this talk a couple of months ago, we discussed a number of titles with the organizers, and a lot of different items were kicked around and were discussed. But nobody suggested this one, and the reason for that was two months ago, Ebola was escalating exponentially and spreading over wider geo...	{ "perplexity_score": 251.5 }
So recently, we heard a lot about how social media helps empower protest, and that's true, but after more than a decade of studying and participating in multiple social movements, I've come to realize that the way technology empowers social movements can also paradoxically help weaken them. This is not inevitable, but ...	{ "perplexity_score": 287.6 }
I'm a blogger, a filmmaker and a butcher, and I'll explain how these identities come together. It started four years ago, when a friend and I opened our first Ramadan fast at one of the busiest mosques in New York City. Crowds of men with beards and skullcaps were swarming the streets. It was an FBI agent's wet dream. ...	{ "perplexity_score": 296.8 }
Hi. Today I'm going to share my personal journey with female genital mutilation, FGM. Feel free to cry, laugh, cross your legs, or do anything your body feels like doing. I'm not going to name the things your body does. I was born in Sierra Leone. Did anybody watch "Blood Diamond"? If you have any thoughts -- I don't h...	{ "perplexity_score": 243.4 }
I want to speak about a forgotten conflict. It's a conflict that rarely hits the headlines. It happens right here, in the Democratic Republic of Congo. Now, most people outside of Africa don't know much about the war in Congo, so let me give you a couple of key facts. The Congolese conflict is the deadliest conflict si...	{ "perplexity_score": 245.4 }
On June 12, 2014, precisely at 3:33 in a balmy winter afternoon in São Paulo, Brazil, a typical South American winter afternoon, this kid, this young man that you see celebrating here like he had scored a goal, Juliano Pinto, 29 years old, accomplished a magnificent deed. Despite being paralyzed and not having any sens...	{ "perplexity_score": 326 }
When I was young, I prided myself as a nonconformist in the conservative U.S. state I live in, Kansas. I didn't follow along with the crowd. I wasn't afraid to try weird clothing trends or hairstyles. I was outspoken and extremely social. Even these pictures and postcards of my London semester abroad 16 years ago show ...	{ "perplexity_score": 283.6 }
It is very fashionable and proper to speak about food in all its forms, all its colors, aromas and tastes. But after the food goes through the digestive system, when it is thrown out as crap, it is no longer fashionable to speak about it. It is rather revolting. I'm a guy who has graduated from bullshit to full-shit. (...	{ "perplexity_score": 221.5 }
My students and I work on very tiny robots. Now, you can think of these as robotic versions of something that you're all very familiar with: an ant. We all know that ants and other insects at this size scale can do some pretty incredible things. We've all seen a group of ants, or some version of that, carting off your ...	{ "perplexity_score": 327.1 }
So we humans have an extraordinary potential for goodness, but also an immense power to do harm. Any tool can be used to build or to destroy. That all depends on our motivation. Therefore, it is all the more important to foster an altruistic motivation rather than a selfish one. So now we indeed are facing many challen...	{ "perplexity_score": 256.2 }
It's said that to be a poet you have to go to hell and back. The first time I visited the prison, I was not surprised by the noise of the padlocks, or the closing doors, or the cell bars, or by any of the things I had imagined. Maybe because the prison is in a quite open space. You can see the sky. Seagulls fly overhea...	{ "perplexity_score": 309.3 }
We can cut violent deaths around the world by 50 percent in the next three decades. All we have to do is drop killing by 2.3 percent a year, and we'll hit that target. You don't believe me? Well, the leading epidemiologists and criminologists around the world seem to think we can, and so do I, but only if we focus on o...	{ "perplexity_score": 206.5 }
Let's go south. All of you are actually going south. This is the direction of south, this way, and if you go 8,000 kilometers out of the back of this room, you will come to as far south as you can go anywhere on Earth, the Pole itself. Now, I am not an explorer. I'm not an environmentalist. I'm actually just a survivor...	{ "perplexity_score": 263.3 }
When you grow up in a developing country like India, as I did, you instantly learn to get more value from limited resources and find creative ways to reuse what you already have. Take Mansukh Prajapati, a potter in India. He has created a fridge made entirely of clay that consumes no electricity. He can keep fruits and...	{ "perplexity_score": 277.6 }
When the Portuguese arrived in Latin America about 500 years ago, they obviously found this amazing tropical forest. And among all this biodiversity that they had never seen before, they found one species that caught their attention very quickly. This species, when you cut the bark, you find a very dark red resin that ...	{ "perplexity_score": 195.8 }
Guatemala is recovering from a 36-year armed conflict. A conflict that was fought during the Cold War. It was really just a small leftist insurgency and a devastating response by the state. What we have as a result is 200,000 civilian victims, 160,000 of those killed in the communities: small children, men, women, the ...	{ "perplexity_score": 205.5 }
I'm a tourism entrepreneur and a peacebuilder, but this is not how I started. When I was seven years old, I remember watching television and seeing people throwing rocks, and thinking, this must be a fun thing to do. So I got out to the street and threw rocks, not realizing I was supposed to throw rocks at Israeli cars...	{ "perplexity_score": 256.4 }
I have a confession to make. As a scientist and engineer, I've focused on efficiency for many years. But efficiency can be a cult, and today I'd like to tell you about a journey that moved me out of the cult and back to a far richer reality. A few years ago, after finishing my Ph.D. in London, I moved to Boston. I live...	{ "perplexity_score": 360.1 }
In the 1600s, there were so many right whales in Cape Cod Bay off the east coast of the U.S. that apparently you could walk across their backs from one end of the bay to the other. Today, they number in the hundreds, and they're endangered. Like them, many species of whales saw their numbers drastically reduced by 200 ...	{ "perplexity_score": 229.6 }
So over the past few centuries, microscopes have revolutionized our world. They revealed to us a tiny world of objects, life and structures that are too small for us to see with our naked eyes. They are a tremendous contribution to science and technology. Today I'd like to introduce you to a new type of microscope, a m...	{ "perplexity_score": 334.9 }
I'm a lexicographer. I make dictionaries. And my job as a lexicographer is to try to put all the words possible into the dictionary. My job is not to decide what a word is; that is your job. Everybody who speaks English decides together what's a word and what's not a word. Every language is just a group of people who a...	{ "perplexity_score": 303 }
Our world has many superheroes. But they have the worst of all superpowers: invisibility. For example, the catadores, workers who collect recyclable materials for a living. Catadores emerged from social inequality, unemployment, and the abundance of solid waste from the deficiency of the waste collection system. Catado...	{ "perplexity_score": 230.3 }
Has anyone among you ever been exposed to tear gas? Tear gas? Anyone? I'm sorry to hear that, so you might know that it's a very toxic substance, but you might not know that it's a very simple molecule with an unpronouncable name: it's called chlorobenzalmalononitrile. I made it. It's decades old, but it's becoming ver...	{ "perplexity_score": 232.5 }
The power of yet. I heard about a high school in Chicago where students had to pass a certain number of courses to graduate, and if they didn't pass a course, they got the grade "Not Yet." And I thought that was fantastic, because if you get a failing grade, you think, I'm nothing, I'm nowhere. But if you get the grade...	{ "perplexity_score": 330.9 }

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