A Very Hungry Caterpillar Invades Asia


WSJ—A species of caterpillar that is spreading rapidly across Asia has ecologists worried that its advance is a foretaste to how other invasive species will spread as trade between developing countries grows.

Polar Bears Have Invaded a Russian Outpost, and They’re Hungry. Bears on the Novaya Zemlya island chain halted a seasonal migration to congregate near a military outpost, in a possible omen of climate change.