Earth Day has been around for 40 years! Wow, where do the years go? Some of you may remember that Earth Day started as an educational “teach-in” in 1970 and was the brainchild of Gaylord Nelson, a Democratic senator from Wisconsin. Nelson had proposed a national "teach-in" on the environment in September 1969 and only eight months later, everything was in place for the single largest national demonstration in American history. The moment was ripe. Thousands of colleges and universities participated. Earth Day 1970 provoked a torrent of apocalyptic predictions. Here are just a couple of examples:
“The world has been chilling sharply for about twenty years. If present trends continue, the world will be about four degrees colder for the global mean
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