Feature
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PaleontologyA Makeover for an Old Friend
Time and technology revamp a dinosaur classic.
By Sid Perkins -
AstronomyX-Ray Visionary
Proposed observatory would image black holes and coronas of nearby stars.
By Ron Cowen -
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AstronomyInvisible Universe
X-ray astronomy opens a new window on the most energetic cosmic events.
By Ron Cowen -
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What’s Worth Saving?
A fracas over a biological term could have huge consequences for conservation.