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.
EXTRA EXTRA An extra chromosome can help suppress the effects of cancer mutations, new research suggests. The findings may help explain why people with Down syndrome, who have an extra copy of chromosome 21 in their cells, have low cancer rates.
FOREST CHANGE Clearing forests and changing landscapes might affect how many people develop Buruli ulcer. The disease is caused by bacteria shown here (in red) in a section of otherwise healthy mouse tissue (in blue).
Angèle Bénard, Claudia Sala and Gerd Pluschke/PLOS ONE 2016
RIDE THE WAVES Compared with a mouse that received random brain stimulation (right), a mouse stimulated to produce more gamma waves (left) had less amyloid-beta (green) in its hippocampus.