The team’s orb rolled vertically at a rate of about 0.5 millimeters per second. Regardless, Mitra and colleagues wrote that ...

In this fascinating DIY project, you'll learn how to make a hydraulic labyrinth with a rolling ball using only cardboard, plastic syringes, and tubing—no motors or electricity required! This hands-on ...

Rolling candies have a small ball that a consumer can roll directly on their tongue for an often sour flavor. In April 2023, CPSC received a report of a 7-year-old girl in New York who choked and ...