Today's Trending Digest

Carlos Moreno shares his vision for the '15-minute city,' where urban spaces are reimagined so that residents can access all daily needs within a short walk or bike ride, promoting sustainability and reducing carbon emissions.

Vishaan Chakrabarti argues that we can build beautiful, sustainable cities that meet the challenges of climate change and population growth — and that our quality of life depends on it.

Kent Larson shows off folding cars, quick-change apartments and other innovations that could make the city of the future work a lot like a small village of the past.

Legendary ocean researcher Sylvia Earle shares astonishing images of the ocean -- and shocking stats about its dire fate -- as she makes her TED Prize wish: that we will join her in protecting the vital blue heart of the planet.

Boyan Slat shares his bold plan to clean up the Great Pacific Garbage Patch using innovative technology to harness ocean currents.

Marine biologist Ayana Elizabeth Johnson outlines strategies for sustainable fishing and ocean conservation to restore marine biodiversity and combat climate change.

Earth, humanity's only home, is in crisis. Conservationist Kristine Tompkins has spent the past three decades working to protect and rewild large stretches of land in South America, safeguarding habitats and restoring balance to the natural world.

Allan Savory has devoted his life to stopping desertification. He now believes -- and his work so far shows -- that a surprising factor can protect grasslands and even reclaim degraded land that was once desert.

The oceans are in trouble -- overfished, polluted and facing the enormous impacts of climate change. Marine ecologist Enric Sala shares a plan to protect vast areas of the ocean, preserving biodiversity and ensuring the health of the planet for generations to come.