Top news for December 21, 2008

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Double pig kidney transplant successfully performed in brain-dead patient

We Have Breached The Safe Planetary Limit For Synthetic Chemicals, Scientists Warn

A ‘trapdoor’ made of muscle and fat helps fin whales eat without choking

Palomar Survey Instrument Shows Astronomical Impact of SpaceX Starlink Satellites

Dementia: How to prevent cognitive decline

Research Shows Supplement Boosts Muscle and Mitochondria Health

Hubble finds a black hole igniting star formation in a dwarf galaxy

Old neurons can block neurogenesis in mice

NASA to Discuss Webb’s Arrival at Final Destination, Next Steps

On This Day In Space: May 25, 2008: NASA's Phoenix spacecraft lands on Mars