human activity

Study looks at reproductive inequality in humans compared to other species

Early humans in eastern Africa used fire in a way that prevented regrowth of the region’s forests, creating a sprawling bushland that exists today

The findings illustrate how pollution from cars, power plants, and other sources combines with natural emissions from trees in the Amazon

Syracuse University professor notes up to 75 percent drop in larger wildlife species populations in parts of Serengeti-Mara ecosystem