Guardian: Erin Brockovich sat in an empty hall, awaiting hundreds of people who would soon stream in from a cold California night seeking answers and reassurance, and gave a sigh of familiarity. Ive been doing this for 20-plus years and Ive learned that it wont get better itll get worse, and theyll need to know that Superman is not coming to rescue them. The environmental activist was referring to the leak at a gas storage well in Porter Ranch that has pumped planet-warming methane into the atmosphere...