A controversial agreement between the state of Montana and the federal government requires Yellowstone National Park to cull bison herds.
The hyperloop may be one of the most interesting developments in the transportation industry today, but the cost of construction could be a drawback.
Fox squirrels rebound: Federal officials, local authorities, and politicians from three states celebrated the 3-pound, short-eared rodent's recovery.
Seoul is pushing policies that promote the use of fuel cells in Korea.
Chemical dispersants used to help breakdown the BP oil spill actually hindered microbes that were helping clean-up the huge slick, says new research.
SeaWorld in San Diego will end its killer whale shows by 2017, opting for a more natural show. But activists say that change is not enough.
To achieve the kind of environmentally sustainable future we will want our grandchildren to inherit, we need everyone on board, Armstrong writes.
Global temperatures are expected to rise 1 degree Celsius above pre-industrial levels this year, with international climate negotiations later this month unlikely to prevent a 2 C. increase.