Earth may once have had a ring like Saturn
A ring of asteroid debris could have orbited Earth for tens of millions of years, and perhaps even have altered the planet's climate
Antibiotic resistance forecast to kill 39 million people by 2050
The number of people worldwide directly killed by antibiotic resistance will rise to 1.9 million a year by 2050, according to the most comprehensive study so far
Cold war spy satellites and AI detect ancient underground aqueducts
Archaeologists are using AI and US spy satellite imagery from the cold war to find ancient underground aqueducts that helped humans survive in the desert
Evidence grows for dramatic brain remodelling during pregnancy
A woman's brain was scanned throughout her pregnancy, adding to the growing body of evidence that dramatic remodelling takes place in preparation for motherhood
How to turn most of the CO2 an astronaut exhales into fresh oxygen
A chemical reaction that recycles carbon dioxide into fresh oxygen could provide more sustainable life support for astronauts on the moon or Mars – and as a bonus, it also produces carbon nanotubes
The complicated role loneliness plays in 26 common health conditions
Loneliness was long thought to cause health conditions ranging from diabetes to cardiovascular disease, but new research paints a more nuanced picture
Dark matter may allow giant black holes to form in the early universe
The long-standing mystery of how supermassive black holes grew so huge so quickly could be solved by decaying dark matter
Tiny chameleon spotted by tourists in Madagascar is new to science
A species of leaf chameleon newly named Brookesia nofy was discovered in a patch of coastal rainforest, a highly threatened habitat in Madagascar
Polaris Dawn mission is one giant leap for private space exploration
The success of the all-civilian spacewalk on SpaceX’s Polaris Dawn mission shows that private space flight is starting to catch up with government space agencies
Antidote to deadly pesticides boosts bee survival
Feeding bees edible bits of hydrogel increases their odds of surviving pesticide exposure by 30 per cent