An Ohio couple named Jon and Natasha Cain built a roller coaster for their children in 2009. They used local materials and ...

Instructor Gage Simpson, right, helps Lucas Cornely, 15, work on his computer-generated roller coaster project in Malta on Thursday. At left, Newton’s law of motion is written out. Simpson said being ...

Update: This coaster deal went off the rails — with over 20,000 shoppers snatching it up over the last month (in no small part thanks to the under-$100 Black Friday price!). It’s gone up in price to ...