CNN
(video)
By Matthew Ponsford and Nick Glass, CNN
(CNN) — Katie Hall was shocked the second she saw it: a light-bulb glowing in middle of a room with no wires attached.
Looking back, it was a crude experiment, she remembers: a tiny room filled with gigantic cooper refrigerator coils — the kind you’d see if you cracked open the back of your freezer.
Read the full story at at: http://www.cnn.com / link to orignal article / thanks to www.activistpost.com