“When burned, magnetic minerals record the magnetic field as it was during the time of the fire, and researchers can then date an object by checking these records against a geomagnetic dataset that they’ve created.” (🔗)

“A recent study showed that the size and shape of sinuses are linked to the size of the frontal lobe, the area responsible for things like speech, emotion, and planning. This means that scientists can use sinuses to study the development of the brain in ancient hominins.” (🔗)