It sounds like a spoof but it's for real.
This is news to me, but I make note of it for general interest. After seeing March of the Penguins my wonder of natural phenomena is renewed.
Honeybees that defend their colonies by killing wasps with body heat come within 5°C of cooking themselves in the process, according to a study in China. At least two species of honeybees there... engulf a wasp in a living ball of defenders and heat the predator to death....a few honeybee species can defend themselves by surrounding an invader. Researchers used to think that the few-dozen bees were trying to sting the wasp, says Seeley. Thermal cameras, however, revealed the balls' soaring heat.
Link to article. Who woulda thunk?
Thanks Gene Expression.