Environmental Change Initiative

After three decades of warming not seen in more than 1,000 years, spring arrives earlier around the world. As species shift their ranges toward the cooler poles or higher elevations, the season brings unexpected arrivals of migrating birds and mistimed hatchings of insects and flowerings of trees.

After three decades of warming not seen in more than 1,000 years, spring arrives earlier around the world. As species shift their ranges toward the cooler poles or higher elevations, the season brings unexpected arrivals of migrating birds and mistimed hatchings of insects and flowerings of trees.