The Global Rooftop Energy Initiative

Concrete is the second most consumed substance on Earth, after water. It’s primary ingredient, cement, accounts for about 5 percent of t...

While there are big problems with algae farming such as salt deposits, scalability issues, contamination of cultures, etc. it's very e...

 In space, astronauts go for years without a fresh supply of water. Floating in a capsule in outer space they wash and drink from the same ...

Google has acquired a US company that generates power using turbines mounted on tethered kites or wings. Makani Power will become pa...

The idea behind the INVELOX system is to capture wind using wide mouthed funnels and channel it via ducts to a turbine sitting at ground ...

Recently the Paris Marathon showed that such a feat is possible. Race organizers laid out an 82-foot span of rubber tiles along the route m...

(CNN) -- Wind turbines have long produced renewable energy but a French engineering firm has discovered another eco-purpose for the towering...