By Jean Tepprman – Re-Blogged From East Bay Express
As the United States has begun transitioning away from the use of coal and petroleum as a source of electricity and fuel, natural gas has been viewed as a relatively benign fossil fuel. After all, natural gas produces less carbon dioxide when burned than those other fossil fuels. It remains the energy source in about half of California’s buildings.
But scientists have increasingly warned that methane, the main component of natural gas, is itself a key heat-trapping gas — 84 times more potent than carbon dioxide in the first twenty years after release, according to the Environmental Defense Fund. In addition to the carbon dioxide created by its burning, the inevitable leaks as natural gas is extracted and shipped, make gas a serious climate threat in its own right.