Top news for December 21, 2008

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Trump Again Names Jared Isaacman to Lead NASA After Pulling His Nomination

Radiation May Be Unnecessary for Many Breast Cancer Patients

SpaceX launches 29 Starlink satellites from Cape Canaveral (video)

Scientists may have found how to reverse memory loss in aging brains

New virus-based CRISPR system accelerates heritable genome editing in tomato - EurekAlert!

Nanotech makes cancer drug 20,000x stronger, without side effects

Scientists Uncover Immune Cells That Could Hold the Secret to Slowing Aging

Popular Sleep Supplement Could Be Harming Your Heart, Doctors Warn

Analysis Finds Global Warming Made Hurricane Melissa More Damaging

Everyday Chemical Linked to Liver Disease and Cancer, Study Warns