Top news for December 21, 2008

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430,000-Year-Old Wooden Tools Are the Oldest Ever Found

Peter H. Duesberg, 89, Renowned Biologist Turned H.I.V. Denialist, Dies

NASA and SpaceX move up launch of Crew-12 astronauts to Feb. 11 as relief crew after ISS medical evacuation

Svalbard Polar Bears Are Getting Fatter (for Now), Study Finds

Rocket Lab launches Korean disaster-monitoring satellite after long delay

Astronomers watch 1st black hole ever imaged launch a 3,000‑light‑year‑long cosmic jet from its glowing 'shadow'

NASA Johnson Celebrates 25 Years in Space with Community Day

A New Theory for What Really Powers a Flare

Dermatologists say collagen supplements aren’t the skin fix people expect

Longevity "Guru" Bryan Johnson Brands AG-1 Useless After Reviewing Scientific Study