Earth's magnetic field locks information into lava as it cools into rock. Millions of years later, scientists can decipher this magnetic data to build geologic timelines and maps.
Nov. 2, 2020 • ~9 min
geology lava plate-tectonics india magnetism rocks mountains himalayas magnetic-fields mantle earths-mantle tectonic-plates subduction paleomagnetism
The Earth's magnetic field was most likely weaker when life evolved on our planet than it is today.
Oct. 15, 2020 • ~5 min
evolution atmosphere moon earth sun magnetism magnetic-fields life-on-earth solar-winds