Going vegetarian halves CO2 emissions from your food
Eating less meat is better for the climate than previously thought, according to a study that looked at what vegetarians and vegans actually eat
Near-death experiences are overwhelmingly peaceful
It turns out it's not so bad to have a near-death experience, according to the first study into how the cause of trauma affects the content
Pigments and poisons: the science of painting on show
A new exhibition shows how artists have always seized on new theories and technologies of colour – we bring you the art and the science that made it possible
Bangladesh's sea walls may make floods worse
Low-lying Bangladesh is threatened by rising seas, but embankments built to hold back the waters may be doing more harm than good
Pillars of creation built by big stellar bubble
Models of how the iconic towers of gas in the Eagle Nebula could have been born also reveal the complex role huge stars play in sparking stellar nurseries
Embrace the lumpiverse: How mess kills dark energy
An elegant assumption underpins our cosmic model: that everything looks the same everywhere. But does it make us see things that aren't there?
Polite drones open door for efficient robot armies
Robots that can navigate in unknown spaces have been given manners to help them coordinate their in-flight movements
Mystery galactic glow may be echo of sterile neutrinos
An unexplained X-ray signal from the swirling Perseus galaxy cluster could be the death rattle of an elusive particle – and hint at the nature of dark matter
Ice sheets may have already passed point of no return
Greenland had an ice sheet 400,000 years ago – then lost it when Earth was only a little warmer than it is today. Get ready for a repeat performance
Cryptographic proof paves way for nuke-free world
"Zero-knowledge proofs" could allow nuclear powers to prove mathematically that weapons marked for destruction are genuine – without revealing their design
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