What's behind this year's boom in Chesapeake Bay blue crabs? Good management? Good weather? Or good luck? The question sounds simple, but the answer may not be. Not if you look for an answer among the scientists who study blue crabs for a living. Some of them, the crab biologists, focus on the in-Bay travels and travails of this colorful, two-clawed crustacean. Others, the oceanographers, track the offshore exodus of blue crab larvae — the tiny offspring who will grow into the next generation of Bay crabs — but only if they work their way off the ocean and back into the estuary. So what's behind the comeback?   more . . .