The Canadian Press on MSN

Propane-leaking Zamboni set off chain reaction blast in Alberta arena: officials

Officials in the southern Alberta town of Taber say it was a leaky Zamboni that set off a chain reaction fireball blast ...
PBS

Chain Reaction Machine

How many steps does it take to power a fan? How many steps does it take to power a fan? A whole lot, when you're using a Rube Goldberg machine! Watch Ethan and Kieran build one of these complicated ...