SN Online
ENVIRONMENT
Snow layers warm northern soils, reducing how much climate-warming carbon the ground can hold. See “Arctic’s wintry blanket can be warming.”
ON THE SCENE BLOG
A Science News editor visits Iceland’s Eyjafjallajökull in “Icelandic volcanoes slumber today, but not forever.”
GENES & CELLS
Sirtuin proteins, associated with longer life spans, also help sync the body’s circadian clock.