Top news for December 21, 2008

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2 MILLION mph galaxy smash-up seen in unprecedented detail

Supermassive Black Holes Defy Physics to Become Cosmic Titans

Why Autism and ADHD Increase the Risk of Eating Disorders

Ancient DNA Methylation: Biologists Unlock Secrets of Human Evolution

Scientists Baffled by 2024’s Unprecedented Heat

Stem Cells Grown in Space Turn Out to Have a Surprise Advantage

Sol 4370-4371: All About the Polygons

Hundreds More Nazca Lines Emerge in Peru’s Desert

New Discovery Suggests the Alphabet May Not Have Originated in Egypt After All

Watch Rocket Lab launch 5 French 'Internet of Things' satellites Nov. 24