TED Talks

3600+ talks to stir your curiosity

Find just the right one

5:26

John Kitching

Who decides how long a second is?

Posted Jan 2021

4:37

Robert Siddall

These squids can fly... no, really

Posted Jan 2021

5:20

Lucy Cooke

3 bizarre (and delightful) ancient theories about bird migration

Posted Dec 2020

4:38

Matteo Fadel

Can you win a game of quantum foosball?

Posted Dec 2020

6:05

Alex Rosenthal

The world's largest organism

Posted Dec 2020

15:20

Emily Levesque

A stellar history of modern astronomy

Posted Dec 2020

5:35

Jeff Dekofsky

The most colorful gemstones on Earth

Posted Dec 2020

4:06

Eve Gaus and Vanessa Ruiz

Why is pneumonia so dangerous?

Posted Nov 2020

6:34

Sophie Rose

How COVID-19 human challenge trials work — and why I volunteered

Posted Nov 2020

7:27

Andrew Pelling

Could we treat spinal cord injuries with asparagus?

Posted Nov 2020

10:46

Johanna Benesty

What it takes to crush a pandemic

Posted Nov 2020

4:53

Seena Mathew

How fast is the speed of thought?

Posted Nov 2020

5:17

Christian Moro

Why do you get a fever when you're sick?

Posted Nov 2020

5:31

Anees Bahji

How do steroids affect your muscles— and the rest of your body?

Posted Nov 2020

4:28

David L. Hu

Do larger animals take longer to pee?

Posted Nov 2020

9:16

Mandë Holford

The power of venom — and how it could one day save your life

Posted Oct 2020

20:59

Leor Weinberger

Can we create vaccines that mutate and spread?

Posted Oct 2020

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