The latest stories from the Science & Environment section of the BBC News web site.
Updated: 2 min 52 sec ago
Australia records its third-warmest calendar year since national records began in 1910.
The Hubble Space Telescope, which in 2015 completes 25 years in orbit, has gathered dramatic new views of two well-known celestial objects - the "Pillars of Creation" and the Andromeda Galaxy.
US company SpaceX has postponed an experiment to bring part of its Falcon rocket down to a soft landing on a floating sea platform.
Astronomers prove they can accurately tell a star's age from how fast it spins, after measuring the spin speed of stars more than a billion years old.
California's SpaceX company will take the unusual step of trying to land part of its Falcon rocket after it launches a cargo mission to the space station on Tuesday.
The virus behind the common cold is much happier in a cold nose, US researchers show.
The people pushed out of Ethiopia's fertile farmland
A team of researchers in the Netherlands has discovered that potatoes can grow in earth fed by salty sea water prompting hopes that previously unusable land could be used for agriculture.
Last year was the UK's warmest since records began in 1910, the Met Office has said.
The precise location of the Europe's Philae comet lander continues to evade detection despite an intense imaging campaign by the Rosetta satellite.
The striking results of testing old rape kits
An 80-metre wind turbine has collapsed on a mountainside near Fintona in County Tyrone.
A goldfish lover pays a North Walsham vet £300 to operate on his constipated pet.
Most types of cancer can simply be put down to bad luck rather than risk factors such as smoking, a study suggests.
A bigger and better clearing house for all the world's new cocoa varieties opens in the UK at the University of Reading.
A species found on an Indonesian island has become the first frog ever seen giving birth to tadpoles, rather than laying eggs.
The Mars rover Opportunity is suffering from memory loss - but Nasa thinks a software hack may save it.
A year of speed, space, soil and big bangs ahead
Many people on the New Year's Honours list are familiar faces, but the vast majority of those named are more used to living out of the spotlight.
Two chemists, one who started research on Viagra and one YouTube celebrity, along with a former NFU president, are knighted in the New Year Honours.