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News stories tagged with "glaciation"

Natural Selections: Return to Snowball Earth

Some scientists believe that the entire Earth was locked in ice between 600,00 and 700,000 years ago. Dr. Curt Stager and Martha Foley discuss the increasingly popular "Snowball Earth" theory, and how it affected the course of life.  Go to full article

Natural Selections: Snowball Earth

Harvard geologists believe that at least one ice age, 600 million years ago, covered the entire earth--that the oceans were covered by a kilometer of ice. Dr. Curt Stager and Martha Foley discuss the controversial new theory.  Go to full article

Natural Selections: Ice-Walled Lake Plains

Sometimes lakes appear on top of old glacier deposits. Dr. Curt Stager explains that some potato fields in Gabriels, NY have exhibited the characteristics of ice-walled lake plains.  Go to full article

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