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New evidence that an extraterrestrial collision 12,800 years ago triggered an...

Christopher R. Moore, University of South Carolina What kicked off the Earth’s rapid cooling 12,800 years ago? In the space of just a couple of years,...

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Restoring the Great Lakes: After 50 years of US-Canada joint efforts,...

Daniel Macfarlane, Western Michigan University The Great Lakes cover nearly 95,000 square miles (250,000 square kilometers) and hold over...