HumansWhy is childbirth so hard for humans – and is it getting even harder? Some think the rise of C-sections means that one day all births will require serious medical intervention. But a surprising new understanding of the pelvis suggests a different story Features
LifeJellyfish sleep about as much as humans do – and nap like us too The benefits of sleep may be more universal than we thought. We know it helps clear waste from the brain in humans, and now it seems that even creatures without brains like ours get similar benefits News