Following up on my calculation of the lifting power of helium balloons, it's time to see how the same argument applies to ping-pong balls being used to raise a sunken ship.

Raising a ship with ping-pong balls is, in fact, nearly the same situation as raising a child with helium balloons. All you have to do is replace the air with water, the...

Finally, time to get back to covering some old (by now) Mythbusters episodes. I'll start with the bonus episode aired a few weeks ago, "Ping-Pong Rescue" — an oldie but a goodie in which the Mythbusters try to raise a boat with ping-pong balls and lift a child off the ground with balloons....