and slowly roll your body back and forth. If you're rolling your back, you'll use your legs to help support yourself. If you're rolling your legs, use your arms to hold yourself up. Again ...

Federal authorities and Boeing are trying to figure out why a 737 Max 8 experienced a rare, unsafe back-and-forth roll during flight. The oscillating motion is known as a Dutch roll, and one ...

These flakes underwent a series of further changes before finally forming a spherical fullerene molecule that seemed to roll back and forth on the graphene substrate below. The high-resolution ...