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Why pig farms are big polluters
Mark Devries from the Citizen Drone Project explains how pigs farms in North Carolina are contaminating the environment with massive lagoons full of manure.
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