News tagged with coal

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Alien world is blacker than coal

(PhysOrg.com) -- Astronomers have discovered the darkest known exoplanet - a distant, Jupiter-sized gas giant known as TrES-2b. Their measurements show that TrES-2b reflects less than one percent of the sunlight ...

Aug 11, 2011 4.9 / 5 (14) 21 | with audio podcast

Oxygen fuels the fires of time

Variations in the Earth's atmospheric oxygen levels are thought to be closely linked to the evolution of life, with strong feedbacks between uni- and multicellular life and oxygen. Over the past 400 million years the level ...

Aug 02, 2010 4.8 / 5 (14) 29 | with audio podcast