The monarch butterfly migration to Mexico dropped by 59 percent in two years.
Wind energy is becoming so cheap it could force nuclear power plants to shutter, analysts say.
After a Minnesota township told sand miners for the fracking industry to take a hike, the mining company tried to change city limits. No dice.
The two most recent popes had a good record of calling for action to fight climate change. But what about this new guy?
The appetite for lion meat is bigger than you might think.
Democrats use less energy than do Republicans. And Greens use way less than everybody else.
Are 5,916 diseased pigs enough to get China to rethink its food safety system? Probably not.
Warmer winters and more storms could mean giant mosquitoes are in the Sunshine State to stay.
Methane hydrates under the deep-sea floor are a huge potential source of energy -- and CO2 emissions. Japan has just figured out how to tap them.