Remember Colony Collapse Disorder? For years, we worried about honeybees dying off and how it would affect crop pollination. You don't hear much about it anymore. Oh, it hasn't gone away, and scientists still don't know what causes it, but the extent of the problem all depends on how you look at it. Honeybees seem to be doing okay, but honeybees are just one species of many kinds of bee. And each species has their place in the modern ecosystem. Physicist Sabine Hossenfelder puts the continuing problems with bees in perspective. The last minute of this video is an ad. -via Digg