Cars of a roller coaster ride against a blue sky at the Oktoberfest. A worker has been killed during a test ride on a rollercoaster at Germany's Oktoberfest on Monday. Felix Hörhager/dpa The start of ...

Roller coaster engineer Korey Kiepert joins WIRED to answer the internet's burning questions about roller coasters and the people who design them. How do roller coasters work? Who invented the first ...

Hair-raising video captured the moment an Arizona man climbed out of a moving roller coaster after his seat’s safety bar became unlatched near the ride’s peak — a split-second decision that he says ...