SN Online
By Science News
BODY & BRAIN
Some U.S. presidents go gray in four years, but they still tend to live longer than average. See “Presidency not a death sentence.”
A program in Nepal enlisting motorbike owners as emergency transport saves the lives of people bitten by snakes. Read “Scooters save lives of snakebite victims.”
GENES & CELLS
Tiny hairlike appendages on cells can sequester a protein involved in regulating appetite. Read “Cilia control eating signal.”
MOLECULES
Cosmetics and other compounds wafting off tourists’ skin threaten a masterpiece. See “ Saving the Last Supper .”