Recently, I was driving down the road and stuck my hand out the window. Initially, I was surprised at how much strength I needed to resist the force of the wind. When I turned my hand to the side and ...

When you put your hand out the window of a moving car, you feel a force pushing against you called drag. This force opposes a moving vehicle, and it's part of the reason why your car naturally slows ...

Piling up: this image shows water flowing from left to right past a partially submerged sphere. A pile up of water is clearly seen to the immediate left of the sphere. (Courtesy: Harris Lab) ...

Thrips don't rely on lift in order to fly. Instead, the tiny insects rely on a drag-based flight mechanism, staying afloat in airflow velocities with a large ratio of force to wing size. Researchers ...

Uplifting structures: the denticles are inspired by the shortfin mako shark. (Courtesy: James Weaver/Harvard University) A shark skin-inspired design can dramatically improve the lift of an aerofoil, ...