347
Scientists uncovered the nutrients bees were missing — Colonies surged 15-fold
(www.sciencedaily.com)
This is a most excellent place for technology news and articles.
Bee extinction means drastically fewer crops and less pollination, but not no crops. It would be devastating, but there would still be agriculture. Lots of staple crops are wind pollinated and don't rely on insects at all. But for the rest of our food, that would all become very expensive and widely unavailable.