In the April 1 SN: Digital tech on the brain, cancer’s sweet spell, elephant sleep stats, ancient stardust spotted, a hydrothermal cradle of life, nutrition in a changing climate, nesting-doll parasitism, a neutrino trio and more.
LIKES FLASHY GUYS Brain size in a female guppy (left) turns out to affect her taste in males. Bigger brains go with a preference for a colorful guy (right) instead of some dim dud.
A wiry electroencephalogram cap captures a baby’s brain response to a light puff of air to the hand. The type and amount of touches a newborn baby gets in the first days of life may shape later responses to touch perception, a study suggests.
CANCER'S SWEET CLOAK Large surface proteins with chains of sugars (illustrated, yellow) on the outside of a cancer cell hide the tumor from immune attack and lull the immune system into a do-nothing trance.