Yale Environment 360: New maps from Google reveal the locations of natural gas leaks in U.S. cities and highlight the extent of "fugitive" methane emissions associated with the nation's aging infrastructure. The Environmental Defense Fund partnered with Google Street View to map leaks in the nation's natural gas system, using cars equipped with air-quality sensors that collected millions of readings across Boston, Indianapolis, and Staten Island. The analysis found thousands of methane leaks in highly-populated areas...