Bears will have to rethink their concept of hibernation as the climate warms and winters grow shorter. How they respond will say much about their commitment to winter naps, and about the deep interconnections between climate and animal behavior.
Even at levels below international air quality guidelines, short-term exposure to pollution can send you to the hospital for more reasons than scientists originally thought, a new study finds.
Plastic waste from America, collected for recycling, is shipped to Indonesia. Some is burned as fuel by tofu makers, producing deadly chemicals and contaminating food.
