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Scientists created the world's whitest paint. It could eliminate the need for air conditioning.

The whitest paint in the world has been created in a lab at Purdue University, a paint so white that it could eventually reduce or even eliminate the need for air conditioning, scientists say. The paint has now made it into the Guinness World Records book as the whitest ever made.

So why did the scientists create such a paint? It turns out that breaking a world record wasn't the goal of the researchers: Curbing global warming was.

https://www.usatoday.com/story/news/nation/2021/09/17/whites...

The paint reflects over 98% of solar energy, while absorbing less than the typical radiation of a building, meaning the building could actually *lose heat* if the entire roof was coated correctly. Most white paints reflect only 80%-90%, so this is truly a breakthrough.

No information in the article about cost, however.
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