Researchers bred rats that couldn't get enough of their exercise wheels -- and isolated the genes that appear to motivate them.
Testicle size is inversely correlated with parental nurturing.
Drone bird tries to keep scarecrow quiet about industrialized farming, to no avail
Let's just say that they packed for adventure.
A crackdown on overprescription at Chinese hospitals is helping prevent "superbugs," but hospital dependence on drug profits remain an obstacle.
There's nothing like a baby primate asleep on a parent's chest.