A natural gas storage well in Cambria County has been leaking gas for 10 days, blanketing the mountains in Jackson Township with a roar like a jet engine and its valleys with an odor of hydrocarbons.
A natural gas pipeline in Texas leaked so much of the super-potent greenhouse gas methane in little more than an hour that by one estimate, its climate impact was equivalent to the annual emissions from about 16,000 American cars.
A cloud of methane was detected by satellite near coal mines in South Africa, drawing attention to a lesser-known environmental risk that comes from using the dirtiest fossil fuel.
Scientists have discovered an active methane seep from Antarctica's sea bed that could shed light on the potent greenhouse gas trapped beneath frozen continent.
