Guardian: As has become the norm for media outlets owned by Rupert Murdoch, just before a half million people participated in the Peoples Climate March around the world, The Wall Street Journal published an opinion piece downplaying the risks and threats posed by human-caused global warming. The editorial was written by Steven Koonin, a respected computational physicist who claims to have engaged in Detailed technical discussions during the past year with leading climate scientists, but who is himself not...