A reader wonders if it's wasteful to flip lights on and off too quickly. Advice columnist Umbra Fisk offers an illuminating answer.
Seth Meyers lays into climate-denier excuses.
Trump is no fan of wind power, and Chuck Grassley is angry.
This mesmerizing GIF shows how a warming planet is forcing animals to relocate.
A contender to dethrone plastic packages
An unusual 5K douses racers in... coal dust.
The "adventure playground" trend hits New York City.
The results are in on the effects of an Ohio Supreme Court ruling that limited access to medication abortion -- and they're not pretty.
Farmers are coming up with creative ways to help butterflies bounce back.