The Ultimate Symbiosis: Mealybugs have bacteria living inside their…

Lots of organisms rely on symbiotic relationships, in which two species rely on each other for survival and one lives inside the other. But citrus mealybugs enjoy a triply symbiotic relationship unlike any we've ever seen...with one absolutely crucial exception. » 8/14/11 7:00am 8/14/11 7:00am