The Earth’s inner core is incredibly tricky to study, since it’s buried beneath thousands of miles of rock. New seismic studies suggest that it’s not just a solid ball of iron, as has been assumed, ...

A quirky material that behaves like a mishmash of liquid and solid could be hidden deep in the Earth. Computer simulations described in two studies suggest that the material in Earth’s inner core, ...

Schools of fish, colonies of bees, and murmurations of starlings exhibit swarming behavior in nature, flowing like a liquid in synchronized, shape-shifting coordination. Through the lens of fluid ...