energy
Most radioactive places on Earth
How Hot can it get? video
http://www.youtube.com/watch?v=4fuHzC9aTik
http://ed.ted.com/lessons/all-of-the-energy-in-the-universe-is-george-zaidan-and-charles-morton
The most radioactive places on Earth
Trampoline vid (elastic collisions) trampoline stunts
misconceptions about temp 4 min
temp versus heat 5 min