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This is a majorly cool piece by Becky Crew on the Scientific American blog network. It details the slow, incremental progress toward a scientific consensus on a truly weird anatomical feature exhibited by some prehistoric chimaeras (fish that share a relatively recent common ancestor with the...

My friends and I all have vivid mental pictures of the Tunguska Event, probably because of Carl Sagan’s retelling of it in the original Cosmos series. Recently, another region of Russia—the Urals—was jolted awake by a similar, though smaller, event. This one caused more casualties than...