In a joint announcement on March 10 President Obama and Canadian Prime Minister Justin Trudeau confirmed a common goal of reducing methane emissions from oil and gas facilities by 40 to 45 percent below 2012 levels by 2025. The EPA proposed last August a methane emission reduction rule for new and modified oil and gas wells. But EPA’s own inventory published at the end of February revealed that methane emissions from 1990 to 2014 were higher than previously estimated. In a welcome move, on March 10 the EPA announced that it will propose new rules for methane emissions from existing oil and gas wells.
In related news NOAA announced that the concentration of CO2 at the Mauna Loa Observatory in Hawaii increased by 3.05 ppm in 2015, which is the largest annual increase on record.
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