.Science / Nature
Giant nests perplex experts
"MOBILE -- To the bafflement of insect experts, gigantic yellow jacket nests have started turning up in old barns, unoccupied houses, cars and underground cavities across the southern two-thirds of Alabama.

Specialists say it could be the result of a mild winter and drought conditions, or multiple queens forcing worker yellow jackets to enlarge their quarters so the queens will be in separate areas. But experts haven't determined exactly what's behind the surprisingly large nests."