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.
NUMBER SMARTS Cats show quantity-related abilities. Without training, cats can pick out differences between groups of a few small objects, such as 2 versus 5, but the felines may be using visual shortcuts.
ENERGIZED A new energy-storing fabric captures energy from the sun and from the wearer's motion simultaneously. The fabric could be used to power wearable electronic devices through exercise or small everyday movements.
HUE NEW A new technique adds color to electron microscope images, as seen in this shot of two brain cells.