The U.N. agreement -- still to be signed -- would cut mercury in power production and common manufacturing processes.
It is, however, unsafe to breathe.
In his second inaugural address, the president made a strong call for climate action.
It wasn't Biden's only stop last night.
In Alameda County, Calif., stores are getting around the new plastic-bag ban by calling plastic bags "reusable."
Scientists have discovered a new floating garbage island off the coast of Chile.
The 787 is designed to be a "super-efficient" airplane, but the batteries that make that efficiency possible have been causing big problems.
A little winter isn't going to stop the worst drought in decades.
Canadian pipeline company Enbridge is losing business as oil companies increasingly ship their product by rail instead of pipeline.
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