We also saw several signs that the next generation of efficient vehicles is right around the corner - this week Chevrolet rolled out its first production Volt while Nissan announced the final pricing of its Leaf EV - a remarkably affordable $25,280. Even the hard working vehicles at FedEx are getting some much-needed relief as the company rolls out its first round of electric delivery vans. And if you're concerned about green vehicles going the distance, look no further than this student-built supercar that's able to get 2,487 MPG.
This week biotech also blew our minds as researchers unveiled plant-based molecules that could create more efficient solar cells and a new type of photovoltaic frog foam that's capable of capturing carbon. Finally, sticks and stones may break bones, but scientists have figured out a way to grow new ones -- using liposuctioned human fat.