Even without approval from Congress, Obama or his successor could take big steps to promote clean energy projects on federal land.
Coal-mining and oil-drilling programs on federal land are big money-wasters, in addition to polluting the environment and hurting the climate.
And it wasn't good to begin with.
When well-off white people flee to the suburbs, it's bad for those left behind in inner cities and bad for the environment too.
In a dense city that already has lots of transportation options, are Uber cars just adding to pollution and congestion?
Birds that are threatened by climate change are now showing up in new locations -- on rolldown gates, apartment building walls, and stoops.
Trump outdoes all the other Republican presidential contenders with his belligerent ignorance about climate change.
Will Obama's new climate rules for power plants make a difference? That all depends on the next occupant of the White House.
Their public statements are celebratory, but scratch the surface and you'll find that feelings in some quarters are more complicated.