Learn how some of Earth’s magnetic field flips last longer than others, weakening our defenses against cosmic radiation.

From climate change to species loss and pollution, humans have etched their impact on Earth with such strength and permanence since the middle of the 20th century that a special team of scientists ...

Deep beneath the ocean floor, ancient sediments hint that Earth’s magnetic field sometimes changed far more slowly than expected.

The record-breaking mission offers an unprecedented opportunity to study the geology of our planet’s largest layer.

This illustrated geologic timescale of Earth focuses on the landscapes, flora and fauna of the West, drilling into the region’s deep history.

Every 200 million years, high-energy comets may pelt our planet as it passes through our galaxy's spiral arms. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

With tectonic plates bumping and grinding against each other, Earth is a pretty active planet. But when did this activity begin? A new study from Yale University claims to have found evidence that ...

Analysis of recently discovered zircon crystals reveals a sharp change in Earth’s geochemistry around 3.8 billion years ago. Researchers studying the ancient crystals say the likely explanation is the ...

In A Nutshell Mars was erupting while T. rex roamed Earth: A Martian volcano system was active between 64 and 50 million ...

SAN FRANCISCO (KGO) -- Living in the Bay Area, we're surrounded by some of the world's most epic geology. But how much do you actually know about the Hayward Fault? Or the Marin Headlands? A new ...

At first glance, Mars might seem rather different from our own planet. Mars is dry, with little atmosphere, and no liquid water on its surface. It is half the size of Earth, lacks a planetary magnetic ...