How we can turn the cold of outer space Your kids might live 2 weeks ago   13:28

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What if we could use the cold darkness of outer space to cool buildings on earth? In this mind-blowing talk, physicist Aaswath Raman details the technology he's developing to harness "night-sky cooling" -- a natural phenomenon where infrared light escapes earth and heads to space, carrying heat along with it -- which could dramatically reduce the energy used by our cooling systems (and the pollution they cause). Learn more about how this approach could lead us towards a future where we intelligently tap into the energy of the universe.

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Comments 1539 Comments

ravi kang
Can i get that sheet sir that you have mentioned in video
Made from sio2 , Tio2... and soo
What will be the cost for that sheet for 1 sq metre ?
Keith Reynolds
Very good mirrors..... Wondering if it could make up the mirrors of a heliostat that concentrates solar rays for solar thermal energy, then a heat engine does work as the energy flows back to the panels in a heliostat that radiates it out to space.
join the conversation
This is VERY interesting! hope that it works!
H M
Half of the audience didn't understand what cellcius meant
H M
Best weapon against global warming
Be the change
Dude, the ancients didn't make ice silly. They bought it at the convience store. Duh.
Your invention is very cool btw...
GUM MY
Thos could be used to power space ships in space
GUM MY
Lets have this comment at 50 likes exacly
YAHUSHUA HA MASHIACH
Can something be done with the sun's heat and ability to cause materials to expand to generate efficient electrical power?
sunny S
What a big rambler !
Esper Chan
I think this guy learned english from Microsoft Sam
DyzioTheDreamer
How about properly shielding objects where it gets too hot because of the sunshine? Perhaps eliminating black cars which need a bunch more petrol to operate their AC in the first place?
Chirag Patel
Unfortunately, the people in power are more interested in spending Trillions to make things that kill & destroy.
Imagine those trillions used for bettering our lives....
Danielle Strijdhaftig
I wonder if he can make a cooling vest.
roblox sucks
He said as implosible
Иван Иванов
Why not make a "solar panel" that runs on IR light instead of visible light?
Hotep Muh Dyk Amen Ra Nnngggrrr
No, water does not freeze at temperatures above zero.
Hotep Muh Dyk Amen Ra Nnngggrrr
Better insulation is the solution , china, india, africa, zero insulation.
Hotep Muh Dyk Amen Ra Nnngggrrr
This guy is a moron, sounds like an arts student.
蒋炜
To these idiots who said this same.as a mirror ..have you ever touched a mirror under sun? lts hot!
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Your kids might live How we can turn the cold of outer space 2 weeks ago   17:15

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It sounds like science fiction, but journalist Stephen Petranek considers it fact: within 20 years, humans will live on Mars. In this provocative talk, Petranek makes the case that humans will become a spacefaring species and describes in fascinating detail how we'll make Mars our next home. "Humans will survive no matter what happens on Earth," Petranek says. "We will never be the last of our kind."

TEDTalks is a daily video podcast of 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). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more.
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