What sound came after the Big Bang? Astronomer Mark Whittle takes us back to the infant cosmos, where massive sound waves pulsed through primordial gas in a pattern that’s still traceable across the universe today. Working with sound artist Ander Mikalson and composer Caroline Shaw, he turns those ancient tones into a glorious, awe-inspiring choral work.

For thousands of years, the Klamath River in Northern California was home to one of the continent’s great salmon runs, creating abundance for the native Yurok Tribe … until a series of dams and a century of extraction nearly destroyed it. Indigenous advocate Amy Bowers Cordalis helped lead the fight to take down those dams — the largest removal of its kind in US history. She offers a roadmap for communities everywhere working to protect and restore the places they call home. (Recorded at TED2026 on April 14, 2026)

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The TED Talks channel features the best talks and performances from the TED Conference, where the world’s leading thinkers and doers give the talk of their lives in 18 minutes (or less) — plus originals, podcasts and exclusive content. Look for videos on Technology, Entertainment and Design as well as science, business, global issues, the arts and more. Visit for our entire library, transcripts, translations and personalized recommendations.

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What’s your point? Communication expert Chris Fenning reveals how the first 60 seconds can make or break a workplace conversation — and shares a three-step framework to help you get it right. (Recorded at TEDxEindhoven on November 7, 2024)

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The TED Talks channel features the best talks and performances from the TED Conference, where the world’s leading thinkers and doers give the talk of their lives in 18 minutes (or less) — plus originals, podcasts and exclusive content. Look for videos on Technology, Entertainment and Design as well as science, business, global issues, the arts and more. Visit for our entire library, transcripts, translations and personalized recommendations.

Watch more:

TED videos may be used for non-commercial purposes under a Creative Commons License, Attribution–Non Commercial–No Derivatives (or the CC BY – NC – ND 4.0 International) and in accordance with the TED Talks Usage Policy: . For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), submit a request at

#TED #TEDTalks #Business