Dive into these talks about water and humanity’s relationship with this life-sustaining liquid.

Water covers over 70% of the Earth, cycling from the oceans and rivers to the clouds and back again. It even makes up about 60% of our bodies. But in the rest of the solar system, liquid water is almost impossible to find. So how did our planet end up with so much of this substance? And where did it come from? Zachary Metz outlines the ancient o...

When programmer Tiffani Ashley Bell learned that thousands of people in Detroit were facing water shutoffs because they couldn't afford to pay their bills, she decided to take action -- in the simplest, most obvious way possible. It's an inspiring story of how one person with tenacity and an idea can create monumental change -- and a demonstrati...

Despite water covering 71% of the planet's surface, more than half the world's population endures extreme water scarcity for at least one month a year. Current estimates predict that by 2040, up to 20 more countries could be experiencing water shortages. These statistics raise a startling question: is the Earth running out of clean water? Balshe...

Singer-songwriter Mia Kami dives into the soothing sounds of the Pacific with a tribute to the unifying spirit of her Indigenous heritage.

After a crisis, how can we tell if water is safe to drink? Current tests are slow and complex, and the delay can be deadly, as in the cholera outbreak after Haiti's earthquake in 2010. TED Fellow Sonaar Luthra previews his design for a simple tool that quickly tests water for safety -- the Water Canary.

According to the UN, nearly one in three people worldwide live in a country facing a water crisis, and less than five percent of the world lives in a country that has more water today than it did 20 years ago. Lana Mazahreh grew up in Jordan, a state that has experienced absolute water scarcity since 1973, where she learned how to conserve water...

In 2003, Singapore's national water agency launched an unprecedented program to provide more than 50% of their nation's water supply by recycling wastewater. The program had been planned for decades to ensure the island nation never ran out of clean water. But is it really safe to reuse anything we flush down the toilet? Francis de los Reyes exp...

If you had to walk a mile for a jug of water every day, as millions of people do, it's unlikely you'd use that precious water to bathe. Young entrepreneur Ludwick Marishane tells the amazing, funny story of how he invented a cheap, clean and convenient solution: DryBath, the world's first bath-substituting lotion.

Imagine a country with abundant power -- oil and gas, sunshine, wind (and money) -- but missing one key essential for life: water. Infrastructure engineer Fahad Al-Attiya talks about the unexpected ways that the small Middle Eastern nation of Qatar creates its water supply.

Water is essentially everywhere in our world, and the average human is composed of between 55 and 60% water. So what role does water play in our bodies, and how much do we actually need to drink to stay healthy? Mia Nacamulli details the health benefits of hydration. [Directed by Chris Bishop, narrated by Addison Anderson].

BCG’s Lana Mazahreh wants individuals, companies and countries to take action against the fast-growing water crisis.

As the world's climate patterns continue to shift unpredictably, places where drinking water was once abundant may soon find reservoirs dry and groundwater aquifers depleted. In this talk, civil and environmental engineer David Sedlak shares four practical solutions to the ongoing urban water crisis. His goal: to shift our water supply towards n...

Deepika Kurup has been determined to solve the global water crisis since she was 14 years old, after she saw kids outside her grandparents' house in India drinking water that looked too dirty even to touch. Her research began in her family kitchen -- and eventually led to a major science prize. Hear how this teenage scientist developed a cost-ef...

With wisdom and wit, Anupam Mishra talks about the amazing feats of engineering built centuries ago by the people of India's Golden Desert to harvest water. These ancient aqueducts and stepwells are still used today -- and are often superior to modern water megaprojects.

Over the next 200 years, we can expect all of the Earth's glaciers to disappear -- unless we act now, says writer Andri Snær Magnason. Telling the story of the Okjökull glacier in Iceland, the first glacier lost to climate change, Magnason explains why we need to start connecting to the future in a more intimate, urgent way in order to stabilize...

This animation is part of the TED-Ed series, "There's a Poem for That," which features animated interpretations of poems both old and new that give language to some of life's biggest feelings. [Poem by Safia Elhillo, directed by Jeffig Le Bars and Jérémie Balais, music by Jeffig Le Bars].

Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it -- inventing the portable Lifesaver filter, which can make the most revolting water drinkable in seconds. An amazing demo from TEDGlobal 2009.

Some 80 to 90 percent of undersea creatures make light -- and we know very little about how or why. Bioluminescence expert Edith Widder explores this glowing, sparkling, luminous world, sharing glorious images and insight into the unseen depths (and brights) of the ocean.

Humankind has been looking for the giant squid (Architeuthis) since we first started taking pictures underwater. But the elusive deep-sea predator could never be caught on film. Oceanographer and inventor Edith Widder shares the key insight -- and the teamwork -- that helped to capture the squid on film for the first time.

In the deep, dark ocean, many sea creatures make their own light for hunting, mating and self-defense. Bioluminescence expert Edith Widder was one of the first to film this glimmering world. At TED2011, she brings some of her glowing friends onstage, and shows more astonishing footage of glowing undersea life.

Good Sport Something in the Water: Where Do Great Athletes Come From? February 8, 2023 [00:00:00] Jody Avirgan: Bomani Jones noticed something. That's one of the best things about Bomani. He's one of the most popular sports journalists around. He watches games. He has takes. He has an HBO show. He has a podcast. We all have a podcast. But more...

Three billion people in the world don't have access to a consistent water supply, due to issues not limited to infrastructure, supply or mismanagement -- and for some, water may flow every two days or even ten. Sustainability engineer Anu Sridharan launched an organization in India that wants to fix this using cellphones and the power of crowdso...

Senior TED Fellow Constance Hockaday is an artist and an organizational development leader.

Body Stuff with Dr. Jen Gunter Wednesday, May 19, 2021 JEN GUNTER: I’m Dr. Jen Gunter. I love science, and I hate when people twist it. And there's a lot of twisted medical misinformation out there. "That’s ridiculous." "Oh It’s so painful." JEN GUNTER: We’re exposed to medical myths whether we are looking for them or not. There are news sto...

We need a global weather service for water, says entrepreneur and TED Fellow Sonaar Luthra. In a talk about environmental accountability, Luthra shows how we could forecast water shortages and risks with a global data collection effort -- just like we monitor the movement of storms -- and better listen to what the earth is telling us.

How do we find fulfillment in a world that's constantly changing? Raymond Tang struggled with this question until he came across the ancient Chinese philosophy of the Tao Te Ching. In it, he found a passage comparing goodness to water, an idea he's now applying to his everyday life. In this charming talk, he shares three lessons he's learned so ...

Mark Shaw demos Ultra-Ever Dry, a liquid-repellent coating that acts as an astonishingly powerful shield against water and water-based materials. At the nano level, the spray covers a surface with an umbrella of air so that water bounces right off. Watch for an exciting two-minute kicker.

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...

The gharial and king cobra are two of India's most iconic reptiles, and they're endangered because of polluted waterways. Conservationist Romulus Whitaker shows rare footage of these magnificent animals and urges us to save the rivers that sustain their lives and our own.