For 50 years, scientists have wondered what annihilated the ancestor of L-chondrites, the roof-smashing, head-bonking meteorites that frequently pummel Earth. Now, a new kind of meteorite discovered in a southern Sweden limestone quarry may finally solve the mystery, scientists report. http://www.livescience.com/46563-new-meteorite-type-fossil-ordovician.html?cmpid=514627_20140715_27830876