The latest stories from the Science & Environment section of the BBC News web site.
Updated: 1 min 28 sec ago
A polar bear breeding project in Scotland takes a step forward with the arrival of a crate for moving a male bear to a female's enclosure.
The legendary abilities of goats and sheep to digest a wide range of inedible materials could help scientists produce cheaper biofuels.
A Bronze Age wheel described as an "unprecedented" find is unearthed at a site dubbed "Britain's Pompeii".
Sir Richard Branson is preparing to unveil a new version of his Virgin Galactic space ship after months of preparation in the Mojave desert in California.
Neuroscientists add fresh insight to the famous observation that people are content to hurt others if they are ordered to do so.
US lead climate negotiator warns of significant diplomatic consequences if a new President pulls out of the Paris climate agreement.
Extremely dry conditions have caused masses of tumbleweed to pile up outside homes in rural Australia.
A fast-growing tumbleweed called "hairy panic" is clogging up homes in a small Australian town.
A microscopic species of sea snail "flies" underwater using movements just like winged insects, according to a study.
The world speed record for a gravity-powered snow sledge is currently 83mph (134km/h) but three Norwegian friends are hoping to smash it.
Neanderthals and humans interbred about 40,000 years earlier than was previously thought, a study suggests.
A specialised white blood cell found in birds can destroy an infection which is thought to cause thousands of deaths a year worldwide, scientists claim.
Watch astronaut Tim Peake demonstrate how gyro-stabilisation is used to allow greater control on the International Space Station.
Archaeologist Dr Sarah Parcak says she will spend the $1m TED prize to try to locate undiscovered sites around the world.
Japan has launched a rocket from the Tanegashima Space Centre in the south of the country.
The world must significantly increase its use of phosphorus-based fertiliser to meet future demands for food says a new study.
The business idea keeping salt mines afloat
A study suggests there could be a layer of iron-rich meteorites hidden just beneath the Antarctic ice.
Fergus Walsh introduces the marvel that is the human brain.
Neuroscience is getting closer to tackling mental illness