The World's Second-Largest Rainforest Is Losing the Carbon It’s Held for a Thousand Years

The Congo Basin is the second-largest rainforest on Earth, and like most tropical forests, it’s getting chewed up by humans. That’s a problem for the climate, and not just because trees are a natural sponge helping to mop up humanity’s ever-rising carbon emissions. New research suggests that as trees are replaced with…

The Gateway Protecting the Arctic's Oldest Sea Ice Has Collapsed Months Ahead of Schedule

Every summer as the Arctic warms up, seasonal highways open on the ocean, allowing sea ice to migrate southward and melt. Now, satellite data is revealing that the gateway to one critical highway—the Nares Strait dividing northwest Greenland and Canada’s Ellesmere Island—has broken up months ahead of schedule. And…