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.
As the Keystone XL pipeline has been mired in controversy, a competitor is speeding through plans for a pipeline that would do the exact same thing.