Some truly interesting stuff @ Rewalk | The 25 Best Inventions of the Year 2013 | TIME.com
I think this one is great -
http://timenerdworld.files.wordpress.com/2013/11/bi-waterless_fracking.jpg?w=260
I think this one is great -
http://timenerdworld.files.wordpress.com/2013/11/bi-waterless_fracking.jpg?w=260