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Green Tip: lower your thermostat by 2 degrees
Tony Dokoupil explains that changing the temperature of your thermostat just by two degrees in the winter and summer can help save about 2,000 pounds of carbon dioxide per year.
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