The average surface temperature varied more widely and was even hotter than previously thought during much of the past 500 million years, according to the most rigorous study so far
Genetic testing on samples collected during the earliest days of the covid-19 outbreak suggests it is likely that the virus spread from animals to humans at the Huanan seafood market
A meta-analysis of 137 clinical trials finds triptan drugs are among the most effective for treating migraines, while newer ditan and gepant drugs were rated less highly
African giant pouched rats proved adept at detecting four commonly trafficked products derived from endangered species including rhino horn and elephant ivory
We are finally untangling the ancient history of the cactus family, revealing some surprising forces that shaped these plants – and prompting concern for their future
Exoplanets in binary star systems usually orbit both stars, but astronomers have now spotted three planets orbiting one or the other star in a pair
Genetic analysis of a bird flu virus detected in a person in Missouri who didn’t previously have contact with animals offers more details on the case, but experts say there isn’t substantial evidence to suggest human-to-human transmission is happening
Particles of light can spend "negative time" passing through a cloud of extremely cold atoms – without breaking the laws of physics
As the space industry evolves, we need a new set of international regulations to decide who is responsible for safety, the number of satellites in space, and more
A new design for a nuclear battery that generates electricity from the radioactive decay of americium is unprecedentedly efficient
