91av

Users may feel cannabis boosts their creativity

Humans

People feel more creative after using cannabis – they aren’t

There is no strong evidence that taking cannabis improves our ingenuity, although it does make users feel more creative

Sponsored

The circular message of farming

Technology

Cyborg jellyfish have a swimming cap and electric propulsion system

Environment

Abandoned coal mines could store wind energy

Illustration of an ultra-high-energy cosmic ray hitting Earth

Physics

A mysterious, incredibly energetic cosmic ray has smashed into Earth

Environment

Coal power plant pollution linked to almost half a million US deaths

Humans

Did Homo naledi bury its dead? Debate rages over human relative

Children being treated at a hospital in Beijing, China, on 23 November

Health

Pneumonia in China: Everything we know so far about mystery illness

This robot can manage to pick up several items of clothing at once

Technology

AI cleaning robot can tidy up clothes in a messy bedroom

Health

Not sleeping enough before surgery may increase pain during recovery

Mice that were deprived of sleep before surgery experienced more pain and inflammation afterwards than animals that had slept enough

Space

Mercury has salt glaciers that could provide the conditions for life

Environment

COP28: Countries agree on how to fund climate ‘loss and damage’

Technology

Squishy inflatable tubes could make programmable soft robots

Environment

Breathtaking images from Environmental Photographer of the Year awards