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Aug 9, 2025  |  
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NextImg:Are nightmares bad for your health?
Science & technology | Well informed

Are nightmares bad for your health?

If you have them often, the answer seems to be yes

|3 min read

Night hags and night mares. Succubi and incubi. Sleep has long been a demon-haunted world. In olden days such visitations were thought to drain the dreamer of life-energy and, though modern science has no truck with actual demons, the fear that bad dreams somehow sap a dreamer’s health has not vanished. Instead, it has been confirmed.

A stack of science journals with a big hole cut through the middle of them

Fraudulent scientific papers are booming

A subset of journal editors may be partly responsible

The Denge Sound Mirrors a cluster of concrete structures on the edge of Romney Marsh, between Lydd Airport and Greatstone Kent

Microphones can spot radar-evading hypersonic missiles

It is a new implementation of an old idea


Astronomers cannot agree on how fast the universe is expanding

This suggests cosmology might be wrong about something fundamental


Should you take collagen?

There are simpler ways to get smoother skin and stronger joints

Scientists want to sequence all animals, fungi and plants on Earth

But international regulation and precarious funding threaten their efforts

How to build a ship for interstellar travel

Winners of a design competition include conjoined Ferris wheels and a 58km-long cylinder