Your belly and your brain speak to each other, says obesity researcher Mads Tang-Christensen. Offering scientific proof that obesity is a disease influenced by genetics and the environment, he introduces a molecule discovered in both the brain and gut that helps control appetite -- and which could be engineered to promote healthy weight loss for...

You may have heard that you should be pooping once a day -- but that's a load of crap, says Dr. Jen Gunter. From the enzymes in your mouth to the nutrient-absorbing power of your large intestine, she journeys through the digestive tract to explain why it's okay to poop at your own pace -- and shares the many regulating benefits of a fiber-rich d...

A skyrocketing demand for food means that agriculture has become the largest driver of climate change, biodiversity loss and environmental destruction. Jonathan Foley shows why we desperately need to begin "terraculture" -- farming for the whole planet.

Give old things new life and even imagine a futuristic perspective on repurposing everyday items with these fun and thoughtful talks.

Each year, the world loses enough food to feed half a billion people to fungi, the most destructive pathogens of plants. Mycologist and TED Fellow Mennat El Ghalid explains how a breakthrough in our understanding of the molecular signals fungi use to attack plants could disrupt this interaction -- and save our crops.

A dung beetle has a brain the size of a grain of rice, and yet it shows a tremendous amount of intelligence when it comes to rolling its food source -- animal excrement -- home. How? It all comes down to a dance.

Sean Sherman, Oglala Lakota from the Pine Ridge reservation, is the founder of the company The Sioux Chef and committed to revitalizing Native American cuisine.

From flying cars to lab-grown food, we love thinking about what delights the future will bring. But futurist Angela Oguntala suggests that, in fact, these pop-culture benchmarks create a blinkered vision of the future. In her talk, Oguntala urges us to reach further and push for true innovation.

To find the path to long life and health, Dan Buettner and team study the world's "Blue Zones," communities whose elders live with vim and vigor to record-setting age. In his talk, he shares the 9 common diet and lifestyle habits that keep them spry past age 100.

On a mission to create a hunger-free world, agricultural entrepreneur Cedric Habiyaremye makes the case for cultivating quinoa -- and other versatile, nutrient-rich grains -- in places experiencing malnutrition, like his native Rwanda. He shares a model to help smallholder farmers across Africa diversify their fields with nutritious and indigeno...

The joy of a new semester: picking classes you never knew existed. These are talks we wish were courses.

Technology architect Fadi Chehadé helped set up the infrastructure that makes the internet work -- essential things like the domain name system and IP address standards. Today he's focused on finding ways for society to benefit from technology. In a crisp conversation with Bryn Freedman, curator of the TED Institute, Chehadé discusses the ongoin...

Sharpen your pencils! It’s time to hit the books again, with these TED Talks that take you through a busy day of math, history, gym, lunch, English, science and art. No finals required.

In a war, it turns out that violence isn't the biggest killer of civilians. What is? Illness, hunger, poverty -- because war destroys the institutions that keep society running, like utilities, banks, food systems and hospitals. Physician Margaret Bourdeaux proposes a bold approach to post-conflict recovery, setting priorities on what to fix first

Jasmine Crowe is the creator of Goodr, a tech-enabled sustainable food waste management company that strives to eliminate hunger and save food from landfills.

TED Fellow Bruce Friedrich plans to compete with the meat industry on its own terms -- by creating alternatives to conventional meat that taste the same or better and cost less.

Humans rely on water for virtually all our activities, from growing food and sanitation to making materials like steel, cement and paper. But clean water sources worldwide are disappearing due to overuse, pollution and climate change, says molecular engineer Seth Darling. He shares game-changing new technologies that could help protect this prec...

About 10,000 years ago, humans began to farm. This agricultural revolution was a turning point in our history and enabled the existence of civilization. Today, nearly 40 percent of our planet is farmland. Spread all over the world, these lands are the pieces to a global puzzle we're all facing: in the future, how can we feed every member of a gr...

Must-listen talks about the future of the environment, crime, technology, government and the human race.

Paul Greenberg researches and writes about fish, aquaculture and the future of the ocean.

Forget the rest of solar system -- Mars is humanity's next destination. We keep talking about it, but what would it really be like to live there?

A billion people in the world lack access to all-season roads. Could the structure of the internet provide a model for how to reach them? Andreas Raptopoulos of Matternet thinks so. He introduces a new type of transportation system that uses electric autonomous flying machines to deliver medicine, food, goods and supplies wherever they are needed.

Rebecca Onie asks audacious questions: What if waiting rooms were a place to improve daily health care? What if doctors could prescribe food, housing and heat in the winter? At TEDMED she describes Health Leads, an organization that does just that -- and does it by building a volunteer base as elite and dedicated as a college sports team.

Priscilla Chomba-Kinywa is an ICT4D expert with experience in technology and innovation spanning 20 years, 6 continents and 70 countries.

Laura Trice is a counselor, life coach -- and purveyor of wholesome junk food.

A whirlwind of energy and ideas, Stephen Ritz is a teacher in New York's tough South Bronx, where he and his kids grow lush gardens for food, greenery -- and jobs. Just try to keep up with this New York treasure as he spins through the many, many ways there are to grow hope in a neighborhood many have written off, or in your own.

The things we eat and drink on a daily basis can impact our health in big ways. Too many carbohydrates, for instance, can lead to insulin resistance, which is a major contributor to cardiovascular disease and Type 2 Diabetes. But what are carbs, exactly? And what do they do to our bodies? Richard J. Wood explains. [Directed by Qa'ed Mai, narrate...

Every environment on the planet -- from forested mountaintops to scorching deserts and even the human gut -- has a microbiome that keeps it healthy and balanced. Ecologist Steven Allison explores how these extraordinarily adaptable, diverse collections of microorganisms could help solve big global problems like climate change and food insecurity...

We all know the arguments that being vegetarian is better for the environment and for the animals -- but in a carnivorous culture, it can be hard to make the change. Graham Hill has a powerful, pragmatic suggestion: Be a weekday veg.

The Ancient Egyptian king Thutmose III described the chicken as a marvelous foreign bird that "gives birth daily." Romans brought them on their military campaigns to foretell the success of future battles. Today, this bird occupies a much less honorable position – on dinner plates. Chris Kniesly explains the evolving role of chickens throughout ...