In the Dec. 10 SN: Star-starved galaxies, animal math, Parkinson’s roots in the gut, supersolid success, Celebrex’s controversial heart risk, a prionlike memory protein, yo-yo dieting’s downside, blue begonias and more.
GUT IMPULSE Signals from gut microbes can activate immune cells called microglia (shown here in green) in the mouse brain, causing inflammation that’s characteristic of Parkinson’s disease.
FREAKY FUTURE Is silicon-based life (illustrated above) out there in the universe? The jury is still out — but with a little help from humans, life on Earth might be able to sprinkle a little silicon in with its carbon.
Lei Chen and Yan Liang (BeautyOfScience.com) for Caltech
WATCH WHAT YOU EAT Peanuts, eggs and other foods can cause allergic reactions in people, but the public and medical community are confused when it comes to preventing, diagnosing and treating such allergies, says a new report.