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 ...

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 ...

A 2023 astronaut photo shows three dark hills, or mesas, towering above part of the Sahara desert in southern Mauritania. The ...

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 ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Credit: E. Cottrell, ...

The Fellowship did not begin the Quest in the Shire; nor did the Quest end in the darkest depths of Mordor. There was no trekking through the Mines of Moria, and the Plains of Rohan remain untrod, for ...

Some years past when I was pulling weeds in my yard, I unearthed a dirt-covered rock. This is not unusual or really worth mentioning except that when I brushed off the dirt, one side unveiled a dark, ...

Which is longer, an era or an epoch? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. From the emergence of life to mass extinctions, Earth has ...

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 ...

When the famed explorer John Wesley Powell bumped, splashed and thrashed his way down the Colorado River in 1869, he discovered one of the most striking geologic features on Earth. Not the Grand ...