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The Lacey Act prohibited the transport of illegally obtained wildlife across state lines, and outlawed hunting in Yellowstone National Park.
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Heavy smog conditions forced city officials in Los Angeles to shut down local schools for most of the month of October.
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NASA released the first space image of Earth "Blue Marble."
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The build up of debris on top of the Cuyahoga river caught fire and caused the river to ooze rather than flow.
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America celebrated its first Earth day with over 20 million party goers
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Congress passed the Endangered Species Act to outlaw hunting in Yellowston National Park and it also outlawed transport of illegaly obtained animals across state borders.
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The EPA administered the Safe Drinking Water Act to protect citizens from contaminated drinking water
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NASA told congress about the effects of global warming.
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Julia Butterfly succeassfully lived at the top of a 180 foot redwood tree to prevent it from being cut down.
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Live Earth concerts around the world featured Madonna, the Black Eyed Peas, the Red Hot Chili Peppers, Metallica, and the Beastie Boys, to raise awareness of climate change.
