In a solid like this brick, the particles are regularly arranged touching their neighbours and move only by vibrating. This explains why solids have a fixed shape. In a liquid like water ...

Even though ice is at 0 °C, the molecules still vibrate. After freezing, the water molecules are further apart than they were as liquid water. As solid ice, the molecules are further apart, arranged ...

BMW estimates it is still years away from requiring solid-state batteries, as the brand spruiks its upcoming sixth-generation ...