Climate Central: Defects in fracked oil and gas wells in Pennsylvania are leading to methane leaks in shale wells throughout the state -- greenhouse gas emissions that could exacerbate climate change, according to a Cornell University study published Monday.
The study, conducted by a team led by Cornell environmental engineering professor Anthony Ingraffea, analyzed more than 75,000 publicly available state environmental compliance records for about 41,000 oil and gas wells that had been drilled between 2000 and...