Honey bee stingers are double-piston venom pumps

Co-author: “The unique geometry of the valves is the key; they act as collapsible pistons" to deliver venom. https://arstechnica.com/science/2026/10/honey-bee-stingers-are-double-piston-venom-pumps/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social