BBC News

The miniaturised timepiece will be used to overhaul deep-space navigation if it proves its worth.

Five critically endangered rhinos from European zoos are flown to Rwanda to be released into the wild.

Lax security at a Nasa lab let a hacker lurk on the agency's network for almost a year, says report.

Nasa's Mars robot records its largest measurement yet of methane in the Red Planet's air.

Roger Harrabin looks at how manure could help to deal with CO2.

Scientists say carbon dioxide can be used to benefit humanity instead of overheating the planet.

As climate change affects the livelihoods of Finland's indigenous Sami people, a proposed new Arctic railway, forestry and mining could change Lapland forever.

Research suggests almost half of packaging used by major UK supermarkets can't be easily recycled.

A discovery by UK scientists could help save species such as the European common frog from extinction

Eight species of British orchid are flourishing on historical sheep-driving pathways.

Britain is obtaining more of its power from zero-carbon sources than from fossil fuels.

How one amputee is helping scientists improve the lives of other people who rely on prosthetic limbs.

With zero emissions and water as a by-product, Tom Burridge was on board one of the test runs.

How our life and work could be affected as Wales aims to reach zero carbon emissions by 2050.

Europe will launch another probe to an icy dirtball, following the highly successful Rosetta mission.

The melting of Himalayan glaciers has doubled over the last 40 years, scientists say.

The biggest global study into attitudes on immunisation reveals confidence is low in some regions.

From Bermuda and the Azores to Ireland and France, large numbers of shoes are washing ashore.

A 50-year-old mystery has been solved by scientists who identified the teeth of ancient Arctic hyenas.

The UK is in pole position to host next year's key climate meeting after agreeing a partnership with main rival Italy.

A climate scientist has captured the reality of sea ice loss in Greenland in a viral picture.

Scientists found the new species during a survey of a marine protected area off Scotland.

The intrepid submarine has made its first significant discovery, say UK scientists.

Concerns have been raised over the suitability of a site in Sutherland aiming to become the UK's first major spaceport.

A report by MPs urges the UK government to end the era of throwaway clothes and poor working conditions in the fashion supply chain.

Edinburgh University leads an international research programme to assess the health of the Atlantic.

Scientists have found a muscle that allows dogs to make 'puppy eyes' and bond with humans.

Heathrow's luggage system handles 180,000 items per day. Tom Burridge takes a look inside.

It aims to protect drivers from accident hazards and reverse a decline in small wildlife numbers.

Two former vets from Essex and their children are showing others how it is possible to live self-sufficiently.

Marine biologist Ilena Zanella vowed to save the shark after diving with them off Costa Rica.

The Earth's biodiversity is decreasing at a faster rate than ever before. Why is this happening?

The annual remaking of the last remaining Inca rope bridge at Q'eswachaka in Peru.

UK sensors placed under the Greenland Ice Sheet will monitor how its glaciers slide towards the ocean.

A group of divers are taking beach clean ups to the next level by diving for litter under water.

Scientists destroy final UK laboratory samples of rinderpest, a highly contagious cattle disease.

Oil company bosses have been rapped by the Pope for seeking more of the fossil fuels that are damaging the climate.

Actress Bonnie Wright, who played Ginny Weasley, meets children who are upcycling their toys.

Police said nine people in total had been arrested in connection with the demonstration in the Cromarty Firth.

Used for building homes on lochs, the artificial islands were previously thought to date from the Iron Age.

Researchers uncover the earliest known evidence of cannabis use, from tombs in western China.

The British Antarctic Survey produces an exquisite new printed sheet map of Greenland and the European Arctic.

A remarkable story of how a snail was rescued from the edge of extinction and returned to the wild.

Hidden Figures Way is named after the African-American women featured in the Oscar-nominated film.

Ten years into a unique scientific project monitoring the famous forest, what have researchers learned?

The UK has promised a stricter emissions target by 2050, but some say it should be sooner.

Chicks hatching for the second year on an estate is good news for the endangered species, the RSPB says.

The UK will set a new legally binding target to reach net zero greenhouse gas emissions by 2050.

The survival of a calf which had a "lethal" virus will help the global fight against it, a zoo says.