Gravity loves to play pranks on the adorable stars of this video. "Here’s a compilation of my son and nephew falling down," the filmer, Courtney, told WooGlobe. Whether the lads are carefully walking ...

LYNNWOOD — Cheers accompanied the rumble of wooden gravity race cars hitting the pavement Saturday at Lynnwood Elementary School. Instead of the typical one-person ride, these cars had room for two.

Use a combination of simple machines to build a catapult. Use a combination of simple machines, a lever, and an axle to build a catapult, and then use the catapult to conduct a simple investigation ...