TED Talks

3500+ talks to stir your curiosity

Find just the right one

11:24

Thomas Crowther

The global movement to restore nature's biodiversity

Posted Oct 2020

1h 4m

Hosted by Chris Hemsworth and Priyanka Chopra Jonas

Countdown Session 5: Action (Full session)

Posted Oct 2020

1h 7m

Hosted by Prajakta Koli and Hannah Stocking

Countdown Session 4: Transformation (Full session)

Posted Oct 2020

1h 7m

Hosted by Jane Fonda and Xiye Bastida

Countdown Session 3: Transformation (Full session)

Posted Oct 2020

1h 9m

Hosted by Al Gore and Jaden Smith

Countdown Session 2: Leadership (Full session)

Posted Oct 2020

1h 8m

Hosted by Mark Ruffalo and Don Cheadle

Countdown Session 1: Urgency (Full session)

Posted Oct 2020

7:34

Johan Rockström

10 years to transform the future of humanity — or destabilize the planet

Posted Oct 2020

1:19

Kristen Bell + Giant Ant

Why act now?

Posted Oct 2020

4:26

Karen Scrivener

A concrete idea to reduce carbon emissions

Posted Oct 2020

1:19

Kristen Bell + Giant Ant

Where does all the carbon we release go?

Posted Oct 2020

1:06

Kristen Bell + Giant Ant

Why is 1.5 degrees such a big deal?

Posted Oct 2020

4:43

Climate Action Tracker

The state of the climate crisis

Posted Oct 2020

1:09

Kristen Bell + Giant Ant

What is net-zero?

Posted Oct 2020

1:13

Kristen Bell + Giant Ant

Why is the world warming up?

Posted Oct 2020

12:51

Gokul Upadhyayula

The life unfolding inside your cells, revealed in 3D

Posted Oct 2020

5:25

TED-Ed

The surprising effects of pregnancy

Posted Oct 2020

14:09

Frederick Streeter Barrett

The neuroscience of psychedelic drugs, music and nostalgia

Posted Oct 2020

5:25

Laurence Hurst

Is human evolution speeding up or slowing down?

Posted Sep 2020

4:57

Daniel L. Schacter

Are all of your memories real?

Posted Sep 2020

4:57

Joseph Isaac

Why people fall for misinformation

Posted Sep 2020

5:28

Matt Walker

6 tips for better sleep

Posted Sep 2020

5:26

Noah R. Bressman

The fish that walk on land

Posted Aug 2020

2:54

Matt Walker

How much sleep do you really need?

Posted Aug 2020

5:02

R. Saravanan

Is the weather actually becoming more extreme?

Posted Aug 2020

4:21

Michael Corballis

Evolution's great mystery: Language

Posted Aug 2020

12:07

Menno Schilthuizen

How animals and plants are evolving in cities

Posted Aug 2020

2:17

Matt Walker

How sleep can improve your immunity

Posted Aug 2020

6:00

Kate Slabosky

Can the ocean run out of oxygen?

Posted Aug 2020

5:17

Marc Fagelson

What's that ringing in your ears?

Posted Aug 2020

5:11

Jan Stejskal

The last living members of an extinct species

Posted Aug 2020

3:40

Matt Walker

How sleep affects your emotions

Posted Aug 2020

4:45

Mike Gil

The big-beaked, rock-munching fish that protect coral reefs

Posted Aug 2020

5:09

Fabio Pacucci

Newton's three-body problem explained

Posted Aug 2020

5:42

Lucy Cooke

No one can figure out how eels have sex

Posted Aug 2020

5:07

Matt Walker

What's the connection between sleep and Alzheimer's disease?

Posted Aug 2020

2:05

Beautyrest

Innovations in sleep

Posted Jul 2020