(By the way, all this Twittering and Ninging convinced me you can teach old dogs new tricks. Using a brand new iPhone, this reporter joined Twitter during the conference and discovered her first “TwitPic” — a photo posted of me meeting eighty-seven-year-old former Sen. John Glenn, an astronaut hero of my childhood who, in 1962, became the first American to orbit the Earth. And yes, he is very concerned about climate change—the view from space gives a special sense of just how fragile the earth’s atmosphere is. Now if I can just figure out how to download that photo…)

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