Overall, this makes rainwater everywhere – including places like sub-Saharan Africa and South and Southeast Asia, where it’s a vital resource for human consumption – unsafe for drinking. That’s true ...

Decades of acid rain generated by power-plant emissions ... ocean lacked oxygen in the late Permian. But most life is concentrated in shallow water, in places like reefs. In 1996 English ...

A new threat is here, and scientists say there's no way to stop it, as even remote parts of the world are seeing microplastic ...