BBC News

Tracking collars on female polar bears measure the animals' struggle to find food on diminishing Arctic ice.

Researchers have discovered that salmon from the chalk streams of southern England are genetically unique.

It's 15 years since disaster struck as the Columbia returned to Earth following a research mission.

Xavier Bettel is at Cape Canaveral in Florida to see his nation's latest space project go into orbit.

The move by Hong Kong's lawmakers is hailed by campaigners as "a lifeline for elephants".

Eyes around the globe have been turning to the skies to view the lunar event.

A killer whale that can mimic words such as "hello" is thought to be the first of its kind to copy human speech.

A blue blood supermoon and lunar eclipse across Asia heralds a year of lunar science milestones, say scientists.

A killer whale is taught to mimic words such as "hello" and "bye bye" in a scientific experiment.

A very rare lunar event is due to occur on 31 January.

Lobsters and crabs are sentient organisms that feel pain and need more protection, say campaigners.

Jasmine Ahumada, from California, attaches spiders and bees to her face to create her distinctive looks.

Starlings take to the skies to create a spectacular aerial ballet before settling on roost.

Burning wood and coal in people's homes will come under scrutiny as part of a government drive to improve air pollution.

Reading human DNA used to take laboratories, a pile of cash and a long time.

A new species of dinosaur unearthed in the Egyptian desert sheds light on Africa's Age of the Dinosaurs.

A fifth of more than 6,000 catalogued invasive animals and plants worldwide are causing harm.

Europe's normally highly dependable rocket, the Ariane 5, loses contact as it flies skyward.

Plastic is one of the biggest risks to the future of coral reefs after ocean warming, say scientists.

After two bears are injured in California wildfires, a creative solution to get them back on their feet.

Researchers identify the remains of the earliest known modern humans to have left Africa.

A Swiss woman who died in 1787 after contracting syphilis is identified as an ancestor of the politician.

Researchers have taken two years to identify a lady who lived 230 years ago.

Volunteer data on the country's 18 resident bat species suggests a positive outlook for the animals.

The seismic region has seen lots of activity in recent weeks, but is there anything to worry about?

Thousands of water stations are being installed to tackle plastic use - with users able to find them via an app.

US firm SpaceX conducts a key test ahead of the debut flight of its new rocket - the Falcon Heavy.

People in high-risk tsunami areas could be helped by an alarm system devised by Cardiff scientists.

Two monkeys named Zhong Zhong and Hua Hua have become the first primates to be cloned.

Scientists work out how prey can escape much faster predators when hunting in the African savannah.

Shark conservationists see donations rise after claims the US president hates the animals.

Two monkeys cloned using the 'Dolly the sheep' technique could bring the world a step closer to human cloning.

US start-up Rocket Lab says its recent launch put a reflective sphere in orbit.

Sir David Attenborough's impassioned speech at the NTAs was all about protecting "our beautiful world".

Scientists have called for special status to protect coral, penguins and other wildlife in Antarctica.

Scientists dive into Antarctic waters to build the case for a vast new marine protected area.

How expanding tea plantations in India's Assam state are putting humans in conflict with elephants.

Looking at a zebra's stripes may not be a good way to tell different types apart, say scientists.

Russian cosmonaut Anton Shkaplerov said he had many questions from people asking if it was possible.

Clever, tool-making crows show scientists the first foundations of technological development.

Some in the car industry claim that modern diesel engines have been unfairly maligned.

Fernando Trujillo works in dangerous areas of the Amazon to save the rare species.

Jeanette Epps would have been the first African-American astronaut on the space station crew.

Researchers at Heriot-Watt University took more than 100 sediment samples from 13 Orkney beaches.

Habitat fragmentation is a bigger threat to Chile's wildcat than human persecution, say conservationists.

Even with no natural climate boost, last year was the second or third hottest on record.

Insects are often portrayed as a sustainable superfood - and many are delicious.

A mass die-off of antelopes in Kazakhstan was triggered by environmental factors, scientists believe.

Scientists capture "incredible" images of instructions contained in DNA being read

Finnish start-up ICEYE releases a "first light" picture from its novel radar satellite.