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Instructional Video6:19
Howard Hughes Medical Institute

The Geologic Carbon Cycle

9th - 12th Standards
What happens to the CO2 emitted into the air by volcanoes? Scientists discovered it is removed through a series of chemical reactions, as discussed here. Through an animated diagram and chemical reaction equations, viewers learn about...
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Instructional Video2:11
MinuteEarth

Why Most Rain Never Reaches The Ground

6th - 12th Standards
More than half of the rain that falls on Earth never reaches the ground. The video discusses the location of rain, the amount that evaporates in the process, and the amount that lands on top of trees all as factors in this phenomenon. It...

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