"Here's one way to get back at your sibling: Release a deadly odor. Honeybee 
researchers have discovered the first example of a pheromone that shortens 
the lifespan of other family members - in this case, older sisters.

"Just one little sniff can change your life," said biologist Gro Amdam of 
Arizona State University, co-author of a study published Dec. 1 in The 
Journal of Experimental Biology. "That's kind of cool."

"Previous research has shown that the presence of larvae in colonies reduces 
adult bees' energy stores and shortens the honeybee lifespan...

http://tinyurl.com/yla2ogz 

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