Train wrecks have done more than $10 million in damage as of mid-May this year -- nearly triple the damage for all of 2013. The feds want to stop that.
Journalist Will Potter plans to use drones to fly around ag-gag laws and get the dirt on factory farms.
The EPA is still refusing to ban these dangerous insecticides, but a U.S. Fish and Wildlife official is phasing them out in some wildlife refuges.
Instead of a patchquilt of permitting rules that vary from county to county, the state now has a simpler -- and cheaper -- process.
Hot, dry weather is triggering wildfires that are eating up forests in the Northwest Territories in Canada, and in the U.S. West too.
Australia is now the first country in the world to undo a price on greenhouse gas pollution, thanks to its climate-denying prime minister.
Experiments by Google, Environmental Defense Fund, and university scientists reveal the huge amounts of methane that leak from pipelines beneath some cities.
The president has unveiled a number of initiatives to help communities and citizens adapt to changes in the weather.
After calls for voluntary conservation didn't work, the drought-stricken state is cracking down on profligate water use.