Wasps and hornets, are equipped with a stinger for self-defense and protecting their nest. A wasp’s stinger contains a poisonous substance that’s transmitted during a sting. By burying their stinger, they inject an acidic compound called melittin, which switches on the victim’s pain receptors, and traces of acetylcholine, another chemical that stimulates pain receptors. The … Continue reading OMG – The Sting of a Wasp