Researchers have come up with a reason why sand grains can build up electrical charges as they collide with one another — sometimes to the point of creating lightning during dust storms and volcanic eruptions. A paper in the upcoming issue of the journal Nature Physics says that particles may transfer their charge vertically during a smashup, so that positive charges go down, while negative charges go up. The findings could have implications for a wide variety of problems, from the electrical charge emitted by a helicopter’s takeoff to the adhesion of dust to solar panels on the Mars rover.
MakeLoveNotPorn founder Cindy Gallop says women need to stop giving a damn what people think.
Nearly half of all stars are born in binary systems, with the most massive ones dying the fastest. It's not pretty for the "second" star.
Freethink's weekly countdown of the biggest space news, featuring Starship's second test flight, a new "dark mysteries" telescope, and more.