An animated guide to how crude oil turns into useful fuel for cars, jets, and more
Valley fever is hard to diagnose, even harder to treat, and potentially fatal—and the number of cases is rising dramatically.
Is extreme weather to blame?
No, this is not the surface of the sun. But it’s close.
Shale gas fracking has helped US carbon emissions to fall. But American carbon extraction is still rising, undermining progress and increasing emissions overseas.