Princeton University researchers have uncovered a previously unknown, and possibly substantial, source of the greenhouse gas methane to the Earth's atmosphere.
After testing a sample of abandoned oil and natural gas wells in
northwestern Pennsylvania, the researchers found that many of the old
wells leaked substantial quantities of methane. Because there are so
many abandoned wells nationwide (a recent study from Stanford University
concluded there were roughly 3 million abandoned wells in the United
States) the researchers believe the overall contribution of leaking
wells could be significant... Read more