The Siberian Mystery Craters Are Back! New Theories Tac Onto Old

These days the biggest mysteries that people are talking about seem to be bright spots, woolly rhinos, Martian "blobs," and yes, even blue-and-black dresses... or is it gold and white?! However, last summer, the world was transfixed by massive holes that had mysteriously appeared in Siberia seemingly overnight. Now, upon the arrival of even more holes, experts have come up with a promising theory about their origins.