As a superb bronze of Ronald Reagan was being unveiled in the gardens of London's U.S. Embassy on July 4, a new study into why global temperatures stalled back in the mid-1990s was making headlines. According to the study's lead author Robert Kaufmann the "lack of global warming" may well be due ... to the Chinese burning "extra coal". So there it is. Hot off the presses is the suggestion that not only is man's burning of coal a chief cause of global warming, man's burning of even more coal, at least temporarily, may also be responsible for cooling global temperatures, too.