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A Moment of Science

Posts tagged biological

September 17, 2009

 

Clouds blocking sun

It’s Raining Bacteria! The Truth About Clouds

Some clouds appear light and fluffy. Others dark and menacing. But are all clouds made of bacteria?

January 6, 2005

 

Racial Stereotypes and Memory

Learn about racial stereotypes and memory on this Moment of Science.

September 27, 2003

 

The Dirt about Desert Soil

In the desert, the absence of water means little or no chemical weathering can take place. Instead, erosion, frost, sedimentation, and the huge temperature fluctuations between day and night break down the rocky surface into sand or gravel.

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