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Rising sea levels displaces 150 million people
NASA Headquarters' Tom Wagner explains how dangerous the rising sea level may be for the world's population. The rise in sea levels is caused by the melting of the ice sheets and glaciers and the thermal expansion of the ocean.
Reading, writing, berries! School gardening03:59
The fight against oil drilling in the Gulf03:49
Transforming trash into incredible tiny homes05:04
Parts of Patagonian glacier collapse00:46
How land grabbing could affect parks07:08
How religion clashes with science06:41