USGS Study Confirms U.S. Amphibian Populations Declining at Precipitous Rates
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Invitation to News Media Ever wondered what a mile-long piece of the Earth's crust looks like? Last fall, a team of scientists drilled into one of the most amazing geologic structures known. This core tells the story of 35 million years ago, when a meteorite 1.5 miles wide, traveling at hypersonic speed, smashed into the Earth's crust and created the Chesapeake Bay Impact Crater. Who: What: When: Where: Learn more on the web: |
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