The problem of light pollution -- and 5 ridiculously easy ways to fix it | Kelsey Johnson
TED Talks Daily4 Des 2019

The problem of light pollution -- and 5 ridiculously easy ways to fix it | Kelsey Johnson

Ever gaze up at the starry night sky? This stunning view is at risk of disappearing -- unless we act now, says astrophysicist Kelsey Johnson. In this fascinating, unexpectedly funny talk, she explains how light pollution affects almost every species on earth (including us) and shares five “stupidly simple” things you can do to help solve the problem.

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Episoder(2648)

The brilliance of bacteria (and how they combat waste) | Patricia Aymà Maldonado

The brilliance of bacteria (and how they combat waste) | Patricia Aymà Maldonado

Bacteria are the most incredible creatures on Earth, says biotechnologist and TED Fellow Patricia Aymà Maldonado. She presents a groundbreaking technology that “trains” bacteria to transform organic w...

16 Jan 26min

Would you take a pill that made you love everyone? | Meghan Sullivan

Would you take a pill that made you love everyone? | Meghan Sullivan

What if the secret to a good life isn't just what you achieve but how deeply you love? Drawing on wisdom from Aristotle, Jesus and modern social psychology, philosopher Meghan Sullivan offers tips on ...

15 Jan 10min

Let's build AI data centers in space | Philip Johnston

Let's build AI data centers in space | Philip Johnston

AI is setting up residence in the final frontier, says technologist Philip Johnston. He shares the incredible work being undertaken to build data centers in outer space — and how they might harness bo...

14 Jan 13min

Can you picture things in your mind? I can't | Alex Rosenthal

Can you picture things in your mind? I can't | Alex Rosenthal

Picture this: a rocket ship crash-lands on a planet, and an alien approaches the spacecraft. What do you see in your mind when you visualize this scene? For Alex Rosenthal (and many others), the answe...

13 Jan 9min

What gets lost when we treat conversations like transactions | Khaya Dlanga

What gets lost when we treat conversations like transactions | Khaya Dlanga

The most powerful stories are the ones told simply to connect with each other, says author Khaya Dlanga. Through humorous anecdotes and moving memories, he explores why it's the conversations we have ...

12 Jan 15min

Sunday Pick: Why your brain is an unreliable narrator (w/ Aparna Nancherla) | How to Be a Better Human

Sunday Pick: Why your brain is an unreliable narrator (w/ Aparna Nancherla) | How to Be a Better Human

Impostor syndrome is one of many therapy-speak words that have gone mainstream in the past few years — but what is it, really? Aparna Nancherla knows all about it. Aparna is a comedian and the author ...

11 Jan 37min

Silence, the universal medicine | Pico Iyer

Silence, the universal medicine | Pico Iyer

In a world growing louder, faster and more fractured, author Pico Iyer makes the case for a radical act of repair. Explore why tapping into silence may be the best medicine you can give yourself, and ...

10 Jan 12min

Beyond the Talk: Pico Iyer on silence and stillness

Beyond the Talk: Pico Iyer on silence and stillness

“Humans were never designed to live at a pace determined by machines,“ says author Pico Iyer. Following his talk at TED2025, he joins Elise Hu, host of TED Talks Daily, to share how he finds time for ...

10 Jan 17min

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