Make HowStuffWorks your homepage
Machines and heavy equipment do the work that people can't. Learn about cranes, earth movers and other heavy equipment.
REFERENCE LINKS
How Roller Coasters Work
Forward this article to five of your friends.
ADVERTISEMENT
VIDEO SELECTIONS
-
TOP SELLING
THEME PARK COMPUTER GAMES
Genre: Action, Publisher: Strategy First, Platform(s): Windows, Media: CD-ROM
$9.99 - $9.99
Genre: Strategy, Publisher: Vivendi Universal, Platform(s): Windows, ESRB Rating: T - (Teen), Media: CD-ROM
$26 - $26
Genre: Sports, Publisher: Activision, Platform(s): Windows, ESRB Rating: T - (Teen), Media: CD-ROM
$7.99 - $7.99