Seconded. That Radiolab episode is one of the better ones I've listen to. Mostly because it's laid out as "But that begs yet another question...", to which the

Seconded. That Radiolab episode is one of the better ones I've listen to. Mostly because it's laid out as "But that begs yet another question...", to which the answer is equally fascinating. Also, it was just satisfying having a story with an ending: cause, found.