Christian Science Monitor: Increasingly, companies are leaving trade associations that have taken positions at odds with what science is telling us about human-induced global warming — that it`s real and that we`d better address it sooner rather than later. Last week, Pacific Gas & Electric (possibly best known nationally as the villain in the movie Erin Brockovich”) left the US Chamber of Commerce over “fundamental differences” on how to approach climate change caused by a build-up of greenhouse gases in …