TED Talks
Aziza Chaouni: How I brought a river, and my city, back to life
The Fez River winds through the medina of Fez, Morocco—a mazelike medieval city that's a World Heritage site. Once considered the "soul" of this celebrated city, the river succumbed to sewage and pollution, and in the 1950s was covered...
TED-Ed
Meet the bluefin tuna, the toughest fish in the sea | Grantly Galland and Raiana McKinney
What's as big as a polar bear, swallows its prey whole, and swims at forty miles an hour? It's not a shark or a killer whale... it's the Atlantic bluefin tuna— the largest and longest-lived of the 15 tuna species. Its unique set of...
TED Talks
TED: A flavorful field guide to foraging | Alexis Nikole Nelson
Whether it's dandelions blooming in your backyard or purslane sprouting from the sidewalk, vegan forager Alexis Nikole Nelson is on a mission to show how freely growing flora could make its way to your plate. With contagious enthusiasm...
TED Talks
Al Gore: What comes after An Inconvenient Truth?
At TED2009, Al Gore presents updated slides from around the globe to make the case that worrying climate trends are even worse than scientists predicted, and to make clear his stance on "clean coal."
TED Talks
TED: How we could make carbon-negative concrete | Tom Schuler
Concrete is all around us: we use it to build our roads, buildings, bridges and much more. Yet over the last 2,000 years, the art of mixing cement and using it to bind concrete hasn't changed very much -- and it remains one of the...
TED Talks
TED: The business benefits of doing good | Wendy Woods
The only way we're going to make substantial progress on the challenging problems of our time is for business to drive the solutions, says social impact strategist Wendy Woods. In a data-packed talk, Woods shares a fresh way to assess...
TED Talks
TED: An interactive map to track (and end) pollution in China | Ma Jun
China has pledged to be carbon neutral by 2060 -- and its citizens are helping industries across the country reach that goal. Environmentalist Ma Jun introduces the Blue Map, an app that empowers people to report pollution violations in...
TED Talks
TED: 3 creative ways to fix fashion's waste problem | Amit Kalra
What happens to the clothes we don't buy? You might think that last season's coats, trousers and turtlenecks end up being put to use, but most of it (nearly 13 million tons each year in the united States alone) ends up in landfills....
TED Talks
TED: The future of the food ecosystem -- and the power of your plate | Ndidi Okonkwo Nwuneli
Many people across the world don't have access to healthy food -- while in other places tons of food go to waste. Social entrepreneur Ndidi Okonkwo Nwuneli thinks we can take bold steps to fix this problem. She lays out what it would...
TED Talks
TED: How India could pull off the world's most ambitious energy transition | Varun Sivaram
India has a historic opportunity to power its industrialization with clean energy -- and its energy choices will make or break the world's fight against climate change, says clean energy executive, physicist and author Varun Sivaram....
TED Talks
TED: The case for fish farming | Mike Velings
We're headed towards a global food crisis: Nearly 3 billion people depend on the ocean for food, and at our current rate we already take more fish from the ocean than it can naturally replace. In this fact-packed, eye-opening talk,...
TED Talks
Eric Sanderson: New York -- before the City
400 years after Hudson found New York harbor, Eric Sanderson shares how he made a 3D map of Mannahatta's fascinating pre-city ecology of hills, rivers, wildlife -- accurate down to the block -- when Times Square was a wetland and you...
TED Talks
TED: A vision of sustainable housing for all of humanity | Vishaan Chakrabarti
By 2100, the UN estimates that the world's population will grow to just over 11 billion people. Architect Vishaan Chakrabarti wants us to start thinking about how we'll house all these people -- and how new construction can fight climate...
TED Talks
TED: Lessons on leaving the world better than you found it | Sophie Howe
Sophie Howe is the world's only future generations commissioner, a new kind of government official tasked with advocating for the interests of generations to come and holding public institutions accountable for delivering long-term...
TED Talks
Stuart Oda: Are indoor vertical farms the future of agriculture?
By 2050, the global population is projected to reach 9.8 billion. How are we going to feed everyone? Investment-banker-turned-farmer Stuart Oda points to indoor vertical farming: growing food on tiered racks in a controlled,...
TED Talks
TED: The race to a zero-emission world starts now⇥ | António Guterres
If we don't act now on climate change, this coming century may be one of humanity's last, says António Guterres, Secretary-General of the United Nations. As the world recovers from the COVID-19 pandemic, Guterres urges us to use this...
TED Talks
TED: How we can make crops survive without water | Jill Farrant
As the world's population grows and the effects of climate change come into sharper relief, we'll have to feed more people using less arable land. Molecular biologist Jill Farrant studies a rare phenomenon that may help: "resurrection...
TED Talks
Marjan van Aubel: The beautiful future of solar power
The Sun delivers more energy to Earth in one hour than all of humanity uses in an entire year. How can we make this power more accessible to everyone, everywhere? Solar designer Marjan van Aubel shows how she's turning everyday objects...
TED Talks
TED: A sci-fi story of climate optimism | Vandana Singh
The world is a living tapestry ... As the weave of life is torn apart in one place, the threads unravel in another, says author and physics professor Vandana Singh, acknowledging humanity's interconnectedness with the planet -- and the...
TED Talks
Kristie Ebi: How climate change could make our food less nutritious
Rising carbon levels in the atmosphere can make plants grow faster, but there's another hidden consequence: they rob plants of the nutrients and vitamins we need to survive. In a talk about global food security, epidemiologist Kristie...
MinuteEarth
Are Plastics Too Strong?
The same chemistry that makes plastic tough, light and flexible also makes it nearly impossible to get rid of, because it’s hard to break those resilient chemical bonds.
TED-Ed
TED-Ed: Can we create the "perfect" farm? | Brent Loken
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...
TED-Ed
The sharks that hunt in forests | Luka Seamus Wright
Forests don't usually come to mind as a habitat for sharks. But marine forests provide a home for 35% of the world's sharks. Mangrove forests in particular function as an essential bridge between land and sea and have evolved various...
TED Talks
Taylor Wilson: My radical plan for small nuclear fission reactors
Taylor Wilson was 14 when he built a nuclear fusion reactor in his parents' garage. Now 19, he returns to the TED stage to present a new take on an old topic: fission. Wilson, who has won backing to create a company to realize his...