Widen the aperture a bit, and we can envision Earth entering a fire age comparable to the ice ages of the Pleistocene, complete with the pyric equivalent of ice sheets, pluvial lakes, periglacial ...

A record 47% of the European Union’s electricity now comes from solar and other renewables, a report Thursday said, in yet ...

Some have an immediate policy impact. Others are more symbolic. Some already are being challenged by federal lawsuits.