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The Secrets of Stardust

Tiny grains of dust floating in interstellar space have radically altered the history of our galaxy.

By J. Mayo Greenberg

The Science of Smart Growth

Are there any alternatives to urban sprawl? Pundits and pols may endlessly debate that question, but the only way to get an answer is to go out and see what works in the real world

By Donald D.T. Chen

Nanotubes for Electronics

They are stronger than steel, but the most important uses for these threadlike macromolecules may be in faster, more efficient and more durable electronic devices

By Phaedon Avouris and Philip G. Collins

Rulers of the Jurassic Seas

Fish-shaped reptiles called ichthyosaurs reigned over the oceans for as long as dinosaurs roamed the land, but only recently have paleontologists discovered why these creatures were so successful

By Ryosuke Motani

Paleolithic Pit Stop

A French site suggests Neandertals and early modern humans behaved similarly

By Kate Wong

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