Earth’s Ediacaran Period, roughly 630 to 540 million years ago, has always been something of a magnetic minefield for scientists. During earlier and later time periods, tectonic plates kept a steady ...

Ancient rocks show Earth’s magnetic field followed deep heat patterns inside the planet for hundreds of millions of years.

Science: Ptolemy's 'Geography, ' c. AD 150 -- Exchange: Al-Idrīsī, AD 1154 -- Faith: Hereford 'Mappamundi, ' c. 1300 -- Empire: Kangnido World Map, 1402 ...

PORTLAND, Maine — For many of us, GPS has been a game changer - a tap, a voice, a turn-by-turn path, will get you there. But there is something special about a physical map that the GPS in your car or ...

A massive meteorite strike 3.5 billion years ago left behind the world’s oldest known impact crater, challenging previous ...