NASA: Fracking Is Source of Massive Methane "Hot Spot"
This map shows anomalous U.S. methane emissions (or how much the emissions differ from average background concentrations) for 2003 to 2009, as measured by the European Space Agency's SCIAMACHY instrument. The Four Corners area [circled]—the area where Arizona, Colorado, New Mexico and Utah meet—is the only red spot on the map.
