There's a road in Lancaster, CA that has grooves carved in such a way that when you drive over them at 55 MPH, they will play a part of Rossini's "The William Tell Overture."
16
Between 2007 and 2012, Bill Gates gave away $28 billion; saving 6 million lives.
34
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
There's a regenerative candle that creates a new candle as it melts.
20