Experience the grandeur of the Grand Canyon, a breathtaking natural wonder carved by the Colorado River over millions of years. Towering rock formations showcase layers of geological history, ...

A layer of rock just 520 million years old sat directly on top of ancient rock dating back 1.4 to 1.8 billion years.

In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.

Wildly fluctuating temperatures, punishing verticality and brushes with carnivores – Duncan Craig takes on the ‘Big Ditch’.

Kayak through towering canyon walls to discover Arizona’s hidden falls, a remote oasis that feels wild, quiet, and ...

A team of international scientists might have just identified where a billion years of missing history might have gone ...

Of all the colorful places to visit in Arizona, Sedona draws visitors from all over the world who wish to gaze upon its splendor. Seeing the looming red rock formations come into focus as I drive into ...

The Great Unconformity is a major gap in Earth's geologic record. The missing layer between Precambrian and Cambrian rocks ...

These memorable Arizona day trips are perfect for spring, with scenic views and the kind of easy adventures that make you ...

More than 50,000 years ago, a meteor hit Earth and formed what we now call Meteor Crater in northern Arizona. But new ...

Scientists mapped a massive subglacial canyon stretching roughly 750 kilometers beneath the Greenland ice sheet, a feature so ...

When people think of Georgia, they often picture charming small towns, historic squares, and scenic mountain views.