Sunken slabs from long-lost tectonic plates are still churning around in Earth's interior, far below your feet. In a new ...

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

Earth is the planet we have the best opportunity to understand in detail—helping us see how other rocky planets behave, even ...

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

Explore the different layers of the atmosphere in this video, featuring engaging 3D animation that illustrates the unique characteristics and functions of each layer. Britain’s tanks would be ...

Earth’s Ediacaran Period, which lasted from about 630 to 540 million years ago, has long puzzled scientists studying the ...

Over 600 million years ago, most of Earth completely froze over, becoming “Snowball Earth.” But even during this frigid period, the climate still behaved in familiar ways, earth scientist Chloe ...

Even when Earth was locked in its most extreme deep freeze, the planet’s climate may not have been as silent and still as once believed. New research from ancient Scottish rocks reveals that during ...

Scientists may finally be closing in on the origins of two colossal, mysterious structures buried nearly 1,800 miles inside Earth—hidden formations that have puzzled researchers for decades. New ...