Last year a German scientist surveying Antarctica's King Baudouin Ice Shelf noticed a huge ring in an otherwise flat plain. Despite skeptics, he and his colleagues think they may have uncovered the site of a meteorite impact.
This video originally appeared on Slate Video. Watch More: slate.com/video
Jim Festante is an actor/writer in Los Angeles and regular video contributor to Slate. He's the author of the Image Comics miniseries The End Times of Bram and Ben.
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