Old-timey sunset paintings shed light on pollution’s past

Grist
By hrichmondMar 26, 2014, 9:40 am40 pts
Did you know you can tell how polluted the air is based on the color of the sunset? True fact! Sunsets can look redder for YEARS after a volcano erupts, due to the ash and gas in the atmosphere. Armed with that knowledge (and a bunch more, because they’re really smart), German and Greek scientists examined…

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