So flour might help us understand earthquakes?
US scientists investigated the link between earthquakes and lightning. They found that tipping flour creates a 200-volt potential. And they think that soil movement in earthquakes may be similar, causing lightning to appear when there are no clouds.
I like how scientists find new ways to investigate the world, using whatever tools they can.
Finding out more about clear-sky lightning could help predict earthquakes, even though people have dismissed this link for 300 years.