What Will Happen When the Earth’s Magnetic Field Switches

What Will Happen When the Earth’s Magnetic Field Switches

The Earth’s magnetic field protects life on Earth, shielding it from damaging radiation and moderating our climate. So the idea that it could completely flip around, or collapse altogether, should cause us to worry, right? Well, yes and no.

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This Ancient Asteroid Strike Was More Insane Than We Realized

This Ancient Asteroid Strike Was More Insane Than We Realized

Around 3.26 billion years ago — long before the dinosaurs — a massive asteroid measuring nearly 36 miles (58 km) across smashed into the Earth. Geologists have now reconstructed this cataclysmic event, and it was far, far bigger than we thought. Here’s how things went down on that fateful day.

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There’s Over Twice as Much Magma Under Yellowstone Than We Thought

There's Over Twice as Much Magma Under Yellowstone Than We Thought

Everyone knows that Yellowstone is home to a super-volcano—but it turns out that the magma reservoir it sits atop is at least 2.5 times larger than we previously thought.

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A Super-Accurate Gravity Map Shows You Where You Can Weigh Less

A Super-Accurate Gravity Map Shows You Where You Can Weigh LessGravity’s often assumed to be constant across the entire planet, but because the Earth varies in shape and density, that’s not really the case. Now, this super-accurate gravity map reveals that the fluctuations are even more extreme than scientists previously thought.

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