By Hank Green
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A strong economy would help the clean tech revolution get a foothold. And a weak economy will hurt it.
Hummers do not beat Priuses in eco-friendliness over their lifetime, and other urban legends debunked.
If all the roofs in the world were white, according to a new study, the effects of global warming would be significantly reduced.
Old pantyhose can become everything from a bungee cord to a scrubber to a paint filter.
Next time you're weighing your options, consult GoodGuide, a source for free, scientist-verified data on more than 60,000 products.
Use this interactive map to find people giving away free stuff, or who will take yours off your hands.