Learn about animals, weather and natural disasters, alternative energy, environmental politics and space.
Tue, Sep 23, 2014 1:00 PM
You might have heard of nocturnal and diurnal animals. But did you know animals like rabbits, house cats and deer are neither of these? Find out about when these species are actually active.
From ball lightning and blue jets to giant elves and sprites, thunderstorms have a lot more tricks up their sleeves than just thunder.
Meet Neville Williams, a Maryland man who says he has an easier time installing solar in Africa and Asia than he does in the United States.
Sainsbury's has installed a new kinetic energy generator that will draw power from moving vehicles in the supermarket parking lots.
Attempt to preserve Brazilian rain forest has led to what some human rights advocates call apartheid.
A 1-week-old puppy is rescued after his owner accidentally flushes him down the toilet while giving him a bath.
Top climate change scientists will unveil a report that details the impact of global warming on the United States and argues for fast action against it.
Washington power company's switch to wind power spurs calls to tear down energy-producing dams to protect endangered salmon.
America's busiest national park hits a big birthday milestone.
Inspired by Earth Hour, Jonathan Kesselman encourages visitors to Times Square to turn off their cell phones for one minute.
When is rhetoric over-the-top when you're talking about climate change?
Satellite images show massive deforestation in the Gishwati Forest between 1986 and 2001.
Catch up on the environmental headlines from the week of June 7-13.
These seven bicycling, recycling, tree-planting mayors have made a national name for themselves by painting the town green.
How we determine our top 10 states
Pollution is blown in the wind from the point of origin to the Arctic, falling in the form of rain and snow.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.