Science News. Posted July 23, 2013: NASA's Spi
Post# of 63828

Science News.
Posted July 23, 2013:
- NASA's Spitzer Observes Gas Emission from Comet ISON
- Valley Networks Suggest Ancient Snowfall on Mars
- Oldest European Fort in the Inland U.S. Discovered in Appalachians
- No Link Between Prenatal Mercury Exposure and Autism-Like Behaviors Found
- Controlling Genes With Light: New Technique Can Rapidly Turn Genes on and Off, Helping Scientists Better Understand Their Function
- Brain Picks out Salient Sounds from Background Noise by Tracking Frequency and Time, Study Finds
- Secrets of Mussels' Clinginess Revealed
- New Record for Cosmic X-Ray Sightings: Exploring Extreme Universe With Rich New Resource
- Environmental Toxins Enter the Brain Tissue of Polar Bears
- Major Cities Often Safest Places in the U.S.
- Devastating Long-Distance Impact of Earthquakes

