DOT EARTH – New York Times
Global warming has felt like breaking news a few times in recent years. But the first big pulse of coverage and public attention came in 1988, when the Amazon rain forest and Yellowstone were ablaze, a searing drought had farmers kicking dusty fields in frustration, and global temperatures had seen enough of a rise that a NASA climate expert, James Hansen, asserted before a Senate panel that statistics showed “the greenhouse effect has been detected and is changing our climate now.”