Utility customers who were told their electricity use was being tracked as part of an experiment reduced their consumption by 2.7 percent.
Workers dumped tons of grout into a ridge to try to repair damage caused by mining, but the grout poured out the bottom and into a creek.
Why did glaciers in the Alps start melting 40 years before temperatures started to rise? New research blames the air pollution spewed by the Industrial Revolution.
U.S. safety officials have launched a Bakken Blitz to keep closer watch on trains carrying fracked oil out of North Dakota.
Japan is building a maglev train that moves fast -- it just tested at more than 310 miles per hour. But construction is moving slowly.
The beetles, moths, and fungi that chomp on crops and devastate forests are moving toward the North Pole at an average of 24 feet per day.
One of Florida's largest orange growers is being fined for improper use of pesticides, but the fine is shockingly low.
A clump of moss on the Antarctic Peninsula is ballooning -- a botanical pioneer in a fast-warming region.
After getting bashed by a TV ad, the Wisconsin senator now says he doesn't "have a belief one way or the other" on global warming.