High-speed video reveals how honey bee stingers pump venom

What happened

Co-author: “The unique geometry of the valves is the key; they act as collapsible pistons" to deliver venom.

Summary assembled by rule from the sources below

Timeline

1. 13:03
   First appeared on Ars TechnicaAArs Technica
2. 01:05
   Discussion started on Hacker NewsHHacker News

Sources