In a study of nearly 3.4 million people, almost 4000 genetic variants were linked to how much alcohol a person drinks a week, the age some start smoking and whether they quit the habit
An artificial intelligence that can detect diarrhoea with 98 per cent accuracy from recordings of toilet sounds could help track outbreaks of diseases, such as cholera
An experimental HIV vaccine led to antibodies against the virus in 35 out of 36 volunteers, but whether this offers protection against the infection is unclear
Slate plaques from about 5000 years ago engraved with images of what look like owls may have been children’s artwork rather than funeral offerings, but not everyone is convinced