Tag: albedo

White Roofs May Actually Add to Global Warming

By Douglas Main | October 20, 2011 8:53 am


A new study published in the Journal of Climate claims that painting rooftops white—a method championed by energy secretary Steven Chu and others to combat climate change—only minimally reduces local cooling, and actually causes a slight increase in overall global warming.

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CATEGORIZED UNDER: Environment

Exoplanet Reflects Practically No Light—and Scientists Have No Idea Why

By Joseph Castro | August 12, 2011 3:16 pm

spacing is important

What’s the News: Using data from NASA’s Kepler spacecraft, astronomers from Princeton University and the Harvard-Smithsonian Center for Astrophysics have discovered the darkest known planet. The exoplanet, called TrES-2b, is located about 750 light-years away from Earth and reflects less than 1 percent of the incident light from its parent star, making it blacker than the blackest piece of coal. The discovery was published recently in the Monthly Notices of the Royal Astronomical Society (pdf).

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CATEGORIZED UNDER: Space
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