Insects and plants emerge in the spring based on temperature. But birds start to fly north based on the change in the amount of daylight. It’s a disconnect that threatens hundreds of species across North America.

Johnstown residents are looking to clean energy to help revitalize the community, which has suffered job losses and a drop in population.

If nuclear plants close, carbon emissions are likely to rise. Yet environmentalists have opposed nuclear power over concerns including radioactive waste.

Models show melting could lead to three feet of sea rise across the globe. “Three feet all over the world is a massive amount of water,” a researcher said.