In this Science Update, find out whether it's possible to take direct action to repair the holes in the ozone layer.
This lesson focuses on how changes in diet and lifestyle from prehistoric to modern times have had an impact on heart health.
In this lesson, students will begin to think about and identify different kinds of groups.
This lesson helps students understand that it is the tilt of the earth's axis that causes the seasons.
Artist Michael Benson and planetary scientist Dr. Nancy Chabot discuss the intersection of art and science at the opening of the Planetfall art exhibition at AAAS in Washington, D.C., on March 27, 2013.
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