Top news for December 21, 2008

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China builds microgravity tower to aid its space research ambitions

Leading Nasa climate expert says July likely to be hottest month on record

What Life in Barbie's Dazzlingly Pink World Would Do to Her Brain--And Yours

Two New Species of Saber-Toothed Cats Identified in South Africa

NASA's Artemis 2 moon mission: Live updates

Christopher Nolan on J. Robert Oppenheimer and His Contradictions

Cannabis Use Linked to Epigenetic Changes, Scientists Discover

Newton’s first law appears to break down in the quantum realm

Asteroid sample incoming: OSIRIS-REx team preps for September landing of Bennu bits

‘The Next Supercontinent’ predicts a future collision of North America and Asia