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Features

Alone in a Crowded Milky Way

Even a galaxy teeming with star-hopping alien civilizations should still harbor isolated, unvisited worlds—and Earth might be among them

By Caleb Scharf
Special Report

Innovations In

The Power of Spheres

DNA or RNA molecules, arranged into spherical shapes, can attack brain cancers and other illnesses that evade conventional drug design

By Chad A. Mirkin, Christine Laramy and Kacper Skakuj

23 and Baby

We now have the ability to screen for thousands of genetic diseases in newborns. That may not always be the healthy thing to do

By Tanya Lewis

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