TED Talks Daily

"Once upon a time in America," says professor Sajay Samuel, "going to college did not mean graduating with debt." Today, higher education has become a consumer product -- costs have skyrocketed, saddling students with a combined debt of over $1 trillion, while universities and loan companies make massive profits. Samuel proposes a radical solution: link tuition costs to a degree's expected earnings, so that students can make informed decisions about their future, restore their love of learning and contribute to the world in a meaningful way.

A quarter of the world's population cares a lot about the Chinese zodiac. Even if you don't believe in it, you'd be wise to know how it works, says technologist and entrepreneur ShaoLan Hseuh. In this fun, informative talk, ShaoLan shares some tips for understanding the ancient tradition and describes how it's believed to influence your personality, career, marriage prospects and how you'll do in a given year. What does your sign say about you?

What does a cultural Big Bang look like? For Amit Sood, director of Google's Cultural Institute and Art Project, it's an online platform where anyone can explore the world's greatest collections of art and artifacts in vivid, lifelike detail. Join Sood and Google artist in residence Cyril Diagne in a mind-bending demo of experiments from the Cultural Institute and glimpse the exciting future of accessibility to arts and culture.

Hidden truths permeate our world; they're inaccessible to our senses, but math allows us to go beyond our intuition to uncover their mysteries. In this survey of mathematical breakthroughs, Fields Medal winner Cédric Villani speaks to the thrill of discovery and details the sometimes perplexing life of a mathematician. "Beautiful mathematical explanations are not only for our pleasure," he says. "They change our vision of the world."

Photographer Stephen Wilkes crafts stunning compositions of landscapes as they transition from day to night, exploring the space-time continuum within a two-dimensional still photograph. Journey with him to iconic locations like the Tournelle Bridge in Paris, El Capitan in Yosemite National Park and a life-giving watering hole in heart of the Serengeti in this tour of his art and process.

In the 1970s (and decades following), TV producer Norman Lear touched the lives of millions with culture-altering sitcoms like All in the Family, The Jeffersons and Good Times, pushing the boundaries of the era and giving a primetime voice to underrepresented Americans. In an intimate, smart conversation with Eric Hirshberg, he shares with humility and humor how his early relationship with "the foolishness of the human condition" shaped his life and creative vision.

In some parts of the world, it's easier to get an automatic rifle than a glass of clean drinking water. Is this just the way it is? Samantha Nutt, doctor and founder of the international humanitarian organization War Child, explores the global arms trade -- and suggests a bold, common sense solution for ending the cycle of violence. "War is ours," she says. "We buy it, sell it, spread it and wage it. We are therefore not powerless to solve it."

Sue Desmond-Hellmann is using precision public health -- an approach that incorporates big data, consumer monitoring, gene sequencing and other innovative tools -- to solve the world's most difficult medical problems. It's already helped cut HIV transmission from mothers to babies by nearly half in sub-Saharan Africa, and now it's being used to address alarming infant mortality rates all over the world. The goal: to save lives by bringing the right interventions to the right populations at the right time.

Before he fought in the galactic battles of Star Wars: The Force Awakens, Adam Driver was a United States Marine with 1/1 Weapons Company. He tells the story of how and why he became a Marine, the complex transition from soldier to civilian -- and Arts in the Armed Forces, his nonprofit that brings theater to the military. Because, as he says: "Self-expression is just as valuable a tool as a rifle on your shoulder." Followed by a spirited performance of Marco Ramirez's "I am not Batman" by Jesse J. Perez and Matt Johnson. (Adult language)

The barbershop can be a safe haven for black men, a place for honest conversation and trust -- and, as physician Joseph Ravenell suggests, a good place to bring up tough topics about health. He's turning the barbershop into a place to talk about medical problems that statistically affect black men more often and more seriously, like high blood pressure. It's a new approach to problem solving with broad applications. "What is your barbershop?" he asks. "Where is that place for you where people affected by a unique problem can meet a unique solution?"