Associated Press: The oil and gas industry may not be to blame if northeastern Colorado tap water is so full of methane it can be set on fire, researchers say.
Fewer than 5 percent of the region`s water wells that were checked for methane pollution had been tainted by oil and gas leaks, according to a study released Monday in the Proceedings of the National Academy of Science.
About 18 percent had methane that came from coal seams that underlie the area, the researchers said.
The other wells either had methane...