The Automotive X-Prize has put $10 million on the table for the team that can build a 100 mile-per-gallon car. Even tougher, teams need to prove that their car could realistically enter production, and sell at least 10,000 units per year. The competitors in this six city, Tour de France-style stage race run that gamut from garage tinkerers to Silicon Valley power-startups.
Aptera Motors
Get up close and personal with the natural world with these amazing photos.
Use this list to clean without spreading toxic chemicals around your home.
Don't miss the beer-can shingles on this DIY beauty that was built in a day
Sustainable options abound if you want to add some spice to your knickers.
The Silo House is made from empty oil silos and is super-green to boot.
African penguins struggle in the wild but a budding love is offering hope.
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