Phys.Org: As the nation suffers through a summer of record-shattering heat, a University of Michigan report finds that Generation X is lukewarm about climate change–uninformed about the causes and unconcerned about the potential dangers. “Most Generation Xers are surprisingly disengaged, dismissive or doubtful about whether global climate change is happening and they don’t spend much time worrying about it,” said Jon D. Miller, author of “The Generation X Report.” The new report, the fourth in a continuing…