Scientists have long puzzled over why Mars, once protected by a global magnetic field like Earth, now shows only a magnetic ...

About 41,000 years ago, Homo sapiens may have survived increased solar radiation caused by a weakening magnetic field by ...

This is an artist's depiction of Earth's magnetic field deflecting high-energy protons from the sun four billion years ago. Note: The relative sizes of the Earth and Sun, as well as the distances ...

This weakening of Earth’s magnetic shield brought with it a global intensification of auroras ... These objects, absent in Neanderthal contexts, suggest that our ancestors were already making fitted ...