1
Published in 2017
Oceans serve as the planet's largest habitat and also help to regulate the global climate. But why is the ocean salty? And how is climate impacting the ocean? Find out more about the ocean, including the consequences of and potential solutions to these changes.
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2
NASA's visible earth project shows photosynthetic productivity for the earth in animated images of the earth.
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3
Published in 2011
This YouTube video explains the basics of tsunamis and how to protect yourself. 
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