Top news for December 21, 2008

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Primordial Helium Further Confirms Our Understanding Of The Big Bang

Physics Nobel highlights Antarctica's role in exploring the cosmos

Elephants continue to shape the savanna even after death

Why Ketamine Immobilizes Some Users

APOD: 2026 October 12 – Jupiter and the Moons

Antarctic Sea Ice Grows to Its 2026 Maximum

DNA changes in Alzheimer’s disease: Expert explains what they mean to patients, families

'It could have been a very different history': Researchers are finally starting to pin down how many Indigenous people were living in the Americas when Columbus arrived

Yes, You Can See The Andromeda Galaxy With The Naked Eye This Week

Could dark energy change over time? Scientists find an unusual idea hiding in a well-known theory of gravity