Denver Museum of Nature & Science

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Asteroid Theory

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Asteroid Theory

Little Rock Hounds

Ages 4 & 5
Learn everything you need to know about rocks and geology.

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Dinosaurs on the Colorado River

Museum paleontologists Joe Sertich and Ian Miller will lead you down the Colorado River by canoe, cutting a path through the ancient home of dinosaurs that roamed Earth 65 million years ago.

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March 25, 2010
What killed the dinosaurs? For years, scientists have come up with different theories -- everything from massive volcanoes to multiple asteroids hitting the Earth. In this Science Bite, Museum scientist Kirk Johnson explains how an international team of scientists came to the conclusion that a single, giant asteroid was the real dinosaur killer.