LifeFriendship: Friends with many benefits No wonder friendship feels so good: for us humans, friends are not an optional extra – we evolved to rely on them. You might even say we're addicted Features
HealthBaboons with pig hearts pave way for human transplants A genetic triple-whammy disguises transplanted organs to keep pig hearts alive in baboons for 600 days, and could work for other organs too ¿ìè¶ÌÊÓÆµ