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It's a Small World

This year's very best in microscopic photography

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MAGAZINE HIGHLIGHTS

Inner-Magnetism

A New Way to See Magnetic Fields

Using neutrons, materials scientists develop a method that goes below the surface.
NASAKilopowerReactor

NASA's New Nuclear Reactor Could Change Space Exploration

The Kilopower reactor is tiny, and it could power the spacecraft of the future.
Maya-Opener

The Lost World of the Maya is Finally Emerging From the Jungle

From massive fortresses to sprawling suburbs, a bold new vision of the vanished Maya civilization takes shape.
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