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Why marches are necessary during COP21
Ken Berlin, president and CEO of Climate Reality Project, explains the role activists will play during the United Nations climate summit in Paris. One way is to get voters to elect people who support climate-friendly policies.
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