BBC News

A rare sea turtle discovered washed up on an Anglesey beach is closer to full health after scans reveal why she found it difficult to dive.

The minute hand of the symbolic Doomsday Clock moves to two-and-a-half minutes to midnight.

UK astronaut Tim Peake talks about returning to space as the capsule that carried him to the ISS goes on display.

The capsule that carried Tim Peake to and from the International Space Station goes on display at London's Science Museum.

University is fined £400,000 after students are given 100 times too much caffeine in an experiment.

Are the Trump team's actions on climate and energy the opening shots in a war on knowledge?

How do scientists assess the scale of dirty air across the UK and just how dangerous is the air that we breathe?

Cats are as good as dogs at certain memory skills and may be just as smart, say scientists.

President's support for Keystone XL and Dakota Access proves he is a climate threat, critics say.

A "very high" air pollution warning has been issued for London for the first time under a new alert system.

Scientists have created bacteria that thrive using an expanded "genetic alphabet".

The Google-sponsored race to put a privately funded spacecraft on the Moon has just five teams left in the competition.

The excavation of a rare, intact Viking boat burial in western Scotland has been set out in detail for the first time.

South Yorkshire Fire Brigade were called in to assist in giving a polar bear a dental check-up.

A Rodrigues fruit bat has been born by C-section at San Diego Zoo.

Ministers accused of not tackling concerns over home insurance, building rules and planning.

Motoring journalist Quentin Willson calls for cheaper and simpler prices to encourage the use of electric cars.

Texan Christy Kroboth used to have a quiet job in a dentist's surgery. Now she spends her time jumping on animals many times her size - and taping their jaws tightly shut.

The opal dubbed the Fire of Australia is back on public display after 70 years in a safe deposit box.

Concern at fabricated stories on websites prompts a psychological study to help people spot fake news.

A project aims to plant three million trees - one for every man, woman and child - in Greater Manchester over the next 25 years.

As the new president settles in, much of the world reaffirms its commitment to the Paris agreement.

Ex-US Vice President Al Gore, who has made a new climate change film, says he thinks campaigners will "win" the debate.

The crack in Antarctica's Larsen C Ice Shelf that looks set to spawn a giant iceberg has spread a further 10km.

Scientists say ants can plot a route home even when travelling backwards.

Archaeological research at a site in Galloway suggests it may have been at the heart of a "lost kingdom" from the Dark Ages.

Bad weather in Italy and Spain is significantly increasing the price of vegetables across northern Europe

The Breakfast team have been monkeying around with one of the stars of new series 'Spy in the Wild'.

US scientists develop a robotic sleeve that can help hearts pump when they fail to work properly.

Donald Trump's choice to lead the Environmental Protection Agency, Scott Pruitt, has faced some tough questioning at his confirmation hearing.

Primates are facing an extinction crisis, according to researchers who have found that 60% of species are under threat.

The onboard atomic clocks that drive the satellite-navigation signals on Europe's Galileo network have been failing at an alarming rate.

Temperature data for 2016 shows it is likely to have edged ahead of 2015 as the world's warmest year.

A smartphone attachment that analyses DNA could help improve cancer and tuberculosis treatments.

The moth, which has a wingspan of just over a centimetre, was discovered in California.

The payment to the UN Green Climate Fund was announced three days before Donald Trump takes office.

A technique designed to help parents affected by genetic disorders is used to tackle infertility.

UK engineers finish the assembly of a wind-observing satellite that meteorologists expect to have a major impact on weather forecasts.

Aerial video shows a huge ice crack which is forcing British Antarctic Survey staff to leave their base.

Documentary maker reflects on the life of astronaut Gene Cernan, following his death.

Video footage showing snow leopards and common leopards sharing the same habitat causes alarm.

Common leopards could be moving to higher altitudes on the Tibetan plateau.

US astronaut Gene Cernan, commander of Apollo 17, has died, his family and Nasa announce.

A giant wave in the atmosphere of Venus may be the biggest of its kind in the Solar System.

The incoming Trump administration accepts far more of the research on climate change than many of their political supporters, say British scientists.

The British Antarctic Survey is pulling all staff out of the space-age Halley base in March because of a big crack in nearby ice.

Flames from an exploding battery were put out in less than half a second during tests.

Prince Charles co-authors a book for adults in the style of the well-known children's series.

SpaceX successfully launches a rocket, its first mission since an explosion in September.

The US SpaceX rocket company resumes operations after a launch pad explosion in September.