Visit TED.com for our complete library of TED Talks, transcripts, and translations. Discover personalized recommendations and explore inspiring ideas from leading

Visit TED.com for our complete library of TED Talks, transcripts, and translations. Discover personalized recommendations and explore inspiring ideas from leading thinkers on technology, science, business, and global issues. You're welcome to link, embed, and share these videos.

Featured is marine biologist Ayana Elizabeth Johnson, who shares five amazing reasons to love parrotfish – from creating white sand to colorful "wardrobe changes." She reveals what's at stake as climate change threatens coral reefs. Get personalized recommendations at TED.com/signup. For commercial use, submit a Media Request at media-requests.TED.com. Follow TED on social media via Twitter, Facebook, and YouTube.

In a GRIT Talk, Ram Seshadri discusses how energy efficiency, particularly with LED lighting, is as crucial as renewable energy. He explores the mechanics of white light emission from LED lamps

In a GRIT Talk, Ram Seshadri discusses how energy efficiency, particularly with LED lighting, is as crucial as renewable energy. He explores the mechanics of white light emission from LED lamps and how researchers approach material science for their development. Watch more from GRIT Talks.

UCTV, launched in 2000, is the University of California's broadcast and online media platform. It features diverse programming from UC campuses, national labs, and research institutions, covering science, health, arts, and public affairs. UCTV extends UC's teaching, research, and public service missions to a global audience. Visit UCTV for more.

Dal and Mike created "Trash Isles," a new country recognized by the United Nations, to combat plastic pollution. This initiative became one of 2018's most awarded campaigns, highlighting solutions

Dal and Mike created "Trash Isles," a new country recognized by the United Nations, to combat plastic pollution. This initiative became one of 2018's most awarded campaigns, highlighting solutions to environmental challenges.

Working at AMV BBDO London for eight years, Dal and Mike are board members whose globally recognized work includes AMV's first White Pencil, the UK's first Green Pencil at The One Show, two Cannes Grand Prix, and a prestigious Design Museum trophy. They also collaborated with figures like Al Gore and David Attenborough on the campaign.

This discussion was presented at a TEDx event. Learn more at ted.com/tedx.

The global resale market, currently valued at $24 billion, is projected to reach $51 billion within five years, underscoring its rapid expansion.

Yerdle collaborates with leading brands

The global resale market, currently valued at $24 billion, is projected to reach $51 billion within five years, underscoring its rapid expansion.

Yerdle collaborates with leading brands like Patagonia, REI, Eileen Fisher, Arc’teryx, and Taylor Stitch. They develop white-label channels, empowering these companies to control their own resale marketplaces. Key questions remain regarding Yerdle's strategy for achieving this success and the individuals CEO Andy Ruben persuaded to embrace their model.

Subscribe to Big Think Edge for insights into critical global issues. The Arctic is warming twice as fast as the rest of the world, causing Greenland's ice

Subscribe to Big Think Edge for insights into critical global issues. The Arctic is warming twice as fast as the rest of the world, causing Greenland's ice to melt. This exposes dark ocean, which absorbs more solar energy, creating a feedback loop that accelerates further ice melt.

Journalist and historian Jon Gertner, a feature writer for the New York Times Magazine, explores this phenomenon in his latest book, "The Ice at the End of the World: An Epic Journey into Greenland's Buried Past and Our Perilous Future." Find his book here.

Sharks play a vital role in marine ecosystems, but they face a significant threat from the shark fin trade. Protecting these essential ocean predators is crucial for ocean health.

Do your

Sharks play a vital role in marine ecosystems, but they face a significant threat from the shark fin trade. Protecting these essential ocean predators is crucial for ocean health.

Do your part to help sharks. Urge your member of Congress to support a nationwide ban on shark fin trade by adding your name here: https://bit.ly/2JDbGHu #FinBanNow

Learn effective tactics to grow support for solar energy from leading business and political communication experts. This session from Solar Power International 2018 offers insights on delivering

Learn effective tactics to grow support for solar energy from leading business and political communication experts. This session from Solar Power International 2018 offers insights on delivering consistent, data-supported messages to strategic audiences, aiming to establish solar as a more dominant player in the U.S. energy landscape.

Featured speakers include Abigail Ross Hopper (President & CEO, Solar Energy Industries Association), Omar Johnson (Marketing & Branding Expert, former CMO at Beats by Dre), Matt Lewis (Senior Columnist, Daily Beast), and Jen Psaki (Former White House Communications Director).

Jade, an 18-year-old from North Carolina, is actively combating Colony Collapse Disorder and promoting bee conservation. Through her Pollinator Initiative, she establishes apiaries and pollinator

Jade, an 18-year-old from North Carolina, is actively combating Colony Collapse Disorder and promoting bee conservation. Through her Pollinator Initiative, she establishes apiaries and pollinator parks in local schools, aiming to replicate her successful high school model across the area.

She has secured grant funding and organized students to become certified beekeepers with local support. Since April 2017, bees introduced to the White Oak area have been maintained pesticide-free. Jade's efforts highlight the importance of honey bees in the ecosystem and educate students about declining bee populations and beekeepers.

"Seven Sacred Laws" is an inspiring documentary that explores the ancient universal values of the Anishinaabe People of Turtle Island (North America). Director Nihad Ademi, in this follow-up to

"Seven Sacred Laws" is an inspiring documentary that explores the ancient universal values of the Anishinaabe People of Turtle Island (North America). Director Nihad Ademi, in this follow-up to his award-winning bio-doc "White Balloon," presents these laws as essential guideposts for human conduct and fostering a deeper relationship with Mother Earth.

Featuring breathtaking prairie footage and interviews with Indigenous elders Dave Courchene Jr and Florence Paynter, the film helps viewers redefine their identity and direction amidst today's growing conflicts, dislocation, and environmental challenges.