And in China, two wind turbines were installed every hour.
By 2017, solar power capacity will nearly triple from 2014 levels.
A solar company preaches to the choir about the good news of solar energy.
The UNEP calls for countries to use at least 20 percent of their transit budgets for bike lanes and safe sidewalks to encourage walking and biking over driving.
All new cars rolling off the Tesla factory line come with full self-driving hardware. Just don't expect the car to drive you anywhere yet.
Advice columnist Umbra Fisk cycles through the reasons.
Los Angeles tries to make the garbage industry better for workers and better for the environment.
The military is building a debris-detecting radar on a island that sits just a few feet above the ocean.
Hurricane Matthew is the third hurricane in two decades to wash animal feces all over North Carolina.