How the brain replays memories during sleep

Your brain can replay the day while you sleep

During deep sleep, the hippocampus repeats patterns of activity linked to recent experiences while other parts of the brain help store them for the long term. Some of the work needed to remember something tomorrow therefore happens after the original experience is over.

The Black Death may have killed half of England

The Black Death reached England in 1348. By the time the outbreak had passed, it may have killed as many as half of the people living in the country.

The Pantheon still has the largest unreinforced concrete dome

Lighter material near the dome’s top, hidden chambers in the rotunda, and an open hole at the peak all reduce its structural load.

How the brain replays memories during sleep

Your brain can replay the day while you sleep

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