Which came first, sleep or the brain?
IPhone12 will stop your implantable defibrillator
8 January 2021UK regulators approve use of 3rd vaccine against coronavirus
8 January 2021Which came first, sleep or the brain?
Stay awake too long, and thinking straight can become extremely difficult. Thankfully, a few winks of sleep is often enough to get our brains functioning up to speed again. But just when and why did animals start to require sleep? And is having a brain even a prerequisite?
