Chinese scientists report editing the genome of human embryos, the role of oxytocin in human/dog relations, chimps that hunt with spears, unexpected bacterial complications in organ transplants, another magma chamber found at the Yellowstone supervolcano and celebrating 25 years of Hubble.
Does a woman wearing red make men think of sex? The iron spike that viruses use to attack bacteria, the medical history of a prehistoric iceman, and more.