Geo Tours Whitewater Raft Trips

Geo Tours presents rafting on Clear Creek

A rafting trip down Clear Creek is one of Colorado's most popular summer activities. Conveniently located in Morrison Colorado just 20 mins from downtown Denver and 20 mins from Idaho Springs on Clear Creek, Geo is one of the longest running outfitters in Colorado and your best bet for a customized and guided river experience on Colorado's best rivers.
Guided Whitewater Rafting Trips in Denver and Morrison, Colorado, (800) 660-7238



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Geo Video '14

Geo Tours has another great season in 2014.

Shot and produced by Alex Dappen Photography.
Guided Whitewater Rafting Trips in Denver and Morrison, Colorado, (800) 660-7238



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The Cretaceous-Tertiary Mass Extinction: What Really Killed the Dinosaurs?

About 66 million years ago, 70 percent of all the species that existed at the time, including the non-avian dinosaurs, became extinct in an apocalypse widely thought to have been caused by a meteor or comet impact on Mexico’s Yucatán Peninsula. At approximately the same time, a series of volcanic eruptions in Western India produced torrents of lava that discharged large amounts of carbon dioxide and sulfur gas into the atmosphere. Mark Richards reviews these remarkable events and explains a radical new theory suggesting they may be causally related. He also discusses how ongoing research is shedding new light on the true cause(s) of the Cretaceous-Tertiary mass extinction.

Presented in collaboration with the Department of Earth and Planetary Sciences, Harvard University

Recorded February 3, 2015