The past 12 months have seen a record low number of tornadoes, while the 12 months before that saw an unusual high. Is there a climate change link?
Firms hit with safety citations routinely manage to get fines reduced, raising questions about the mine-safety system's effectiveness.
Taking away bees' honey and feeding them high-fructose corn syrup instead makes them more vulnerable to pesticides, a new study finds.
The Western U.S. is in for a big and dangerous fire season, and Brown is pointing the finger squarely at global warming.
The rest of the world is eyeing the cheap natural gas produced by fracking in the U.S. Obama will soon decide whether we should share.
Low-priced natural gas doomed the Wisconsin plant, while maintenance problems plague the San Onofre nuke facility along the Pacific coast.
Firefighters are bringing a blaze in the Santa Monica Mountains under control, but many more such fires are expected in the West this year.
Contrary to what the U.S. State Department says, the head of an oil-sands company insists that the industry needs the pipeline to help it expand.
There may be fewer tropical cyclones in the Pacific in the future, but those that do form are expected to be stronger and more likely to strike Hawaii.