Discover how rocks, minerals & the rock cycle change your world. Join the Science Trek team to explore rocks and minerals! Discover how the Earth formed, the three types of rocks, the rock cycle, and ...

Test your rock & mineral smarts—are you a Rock Star? Think you know rocks and minerals? Take the Science Trek quiz! Test your smarts on gold, salt, Earth’s oldest rocks, gemstones on Mars, and the ...

Researchers say they might have discovered the oldest rocks on Earth. The rocks in question are a belt of swirly, stripe-covered rocks found in the northeastern reaches of Canada. These rocks appear ...

Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the Greek god of the underworld, reflecting the extreme heat that likely ...

A remote outcrop in Canada harbors rocks that are at least 4.16 billion years old, researchers report June 26 in Science. If true, these rocks would be the oldest known on Earth and the first to date ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. While rocks are not exactly living things, they are not immune to ...

Scientists found rocks in northern Quebec that may be over 4 billion years old. These ancient stones offer a glimpse into ...

The story of Earth is the story of change. The 4.5 billion years of this planet’s history saw it transformed from a hellish world of magma oceans and poisonous air to a temperate, habitable home ...

Scientists at the University of Southampton have uncovered evidence from ancient rocks that Earth's climate continued to fluctuate during its most extreme ice age—known as Snowball Earth. During the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Gold and other ...

On a special episode (first released on May 28, 2025) of The Excerpt podcast: We need rare earth minerals for use in items we rely on for modern life. New tech holds possibilities for mining at home ...