One type of friction can waste energy even when two perfectly smooth surfaces move against each other, but researchers are ...

The irregular, swirling motion of fluids we call turbulence can be found everywhere, from stirring in a teacup to currents in the planetary atmosphere. This phenomenon is governed by the Navier-Stokes ...

Candela, based in Sweden, is at the forefront of an international array of startups making electric hydrofoiling boats (it has delivered around 100 leisure boats, and has orders for 83 ferries). Its ...