Likely culprit found for recent gray whale die-off: declines in sea ice cover that lead to a dearth of the crustaceans that gray whales love to eat.

Likely culprit found for recent gray whale die-off

Over the past four years, hundreds of gray whales have washed up dead on the beaches of Mexico, the U.S. and Canada – and scientists have been trying to figure out what’s causing the majestic animals ...