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A Moment of Science

Posts tagged Toronto

August 7, 2007

 

Delaware River in Pennsylvania landscape

The Lingering Ice Age

About twenty thousand years ago, during the last major ice age, a miles-thick ice sheet covered all of Canada and most of the northeastern United States.

September 27, 2003

 

Chicago and Asthma

Chicago, the windy city--this wind might bring some special problems to people with asthma. "Chicago and Asthma", on this Moment of Science.

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