The oil and gas industry is trying to ease environmental concerns by developing nontoxic fluids for the drilling process known as fracking, but it's not clear whether the new product will be widely embraced by drilling companies.
Federal officials say there is no island of debris from the 2011 Japanese tsunami floating toward the United States.
Five large cannons from a sunken ship captained by the legendary pirate Blackbeard have been recovered by US archeologists, authorities confirmed Wednesday.
The United States cut its energy-related carbon dioxide pollution by 3.8 percent last year, the second biggest drop since 1990, the Department of Energy said Monday.
Explorers who removed a wooden slab from Lake Michigan this summer are taking an unusual step to determine whether it could have come from the Griffin, a long-lost vessel from the 17th century.
Security flaws in voting technology in a number of US states could taint the outcome of the 2012 election, a study concluded Wednesday, saying it was "highly likely" some systems will fail.
State wildlife officials have captured images of a wolverine on the northern slope of the Uinta Mountains this year, the first documented sighting of the animal in Utah since a wolverine carcass was found in 1979.
Federal and state officials are clashing over standards for warning the public about water contamination at the nation's beaches.
California officials have decided to add the gray wolf to the state's endangered species list.
The United States and China aired concerns on hacking, which has emerged as a major irritant between the world's two largest economies in the build up to annual talks this week.