USA Today: Climate change is already affecting how Americans live and work, and evidence is mounting that the burning of fossil fuels has roughly doubled the probability of extreme heat waves, the Obama administration said Friday. "Sea level is rising, oceans are becoming more acidic, and glacier and Arctic Sea ice are melting," says a draft of the third federal Climate Assessment Report, compiled by more than 240 scientists for a federal advisory committee. "These changes are part of the pattern of global...