BBC News

As a warming climate threatens traditional food supplies in the Arctic, one rural Alaskan village is flying in hundreds of reindeer by cargo plane. James Cook went to find out why.

A man abandoned as a baby 61 years ago traced his family using a DNA detective. But what do they do?

Viable mouse sperm stored in space gives hope for sperm banks on the Moon, a Japanese team says.

Nepalese mountain guides have a physiology that uses oxygen more efficiently than lowlanders.

A waste disposal firm claims that plastic drinking straws are "the ultimate in human wastefulness".

One is up a river estuary, the other is awaiting removal from a beach.

Experts warn against getting too close to wild animals after a sea lion pulls a young girl under water.

The nest in the Cairngorms in which three osprey chicks had hatched now appears to have been abandoned.

Make science and research a priority in Brexit talks, says Russell Group.

Contraception wasn’t just socially groundbreaking - it also changed the professional landscape.

The world's highest mountain poses new hazards after the collapse of a key rocky outcrop.

Look but don't touch as it tumbles down the Pulama Pali slope in Hawaii.

A key component of the UK's first high-energy proton beam machine is delivered to its new home in Newport.

Measures are announced after water enters a frozen facility guarding the world's key crop seeds.

A Humboldt penguin chick has hatched at a sea life sanctuary for the first time in more than a decade.

Locals say sheep on Agios Efstratios are starving as so much plant life is being devoured by swarms.

The packaging for Pringles and Lucozade Sport are among the most difficult to recycle, a trade body says.

Shutting down wind farms when birds pass over is one of the methods being tested to save migrating species.

The vast reserves of methane hydrates under the bottom of the sea could be key to future energy needs.

Zafer Kizilkaya's work saved a Turkish community. His fish conservation model's now widely adopted.

Whether or not the US is involved in global talks, the US will also feel the impacts of climate change.

Nasa is seeking the best ideas for experiments to fly on a mission that will land on Jupiter's moon Europa.

Students in the Netherlands have come up with this novel design.

Almost 2,000 plants new to science have been identified in the past year, but many are at risk.

Much of the packaging we put in the recycling bin ends up in landfills, but a design competition backed by Prince Charles is aiming to tackle the issue.

"One boy said: I'm going to kiss it in the mouth," the snake's owner said.

The countries most vulnerable to climate change say the rapid implementation of the accord is key to their survival.

Rare left coiled snail, Jeremy, has been rejected by potential mates and is now stuck in a love triangle.

Scientists suggest smaller plants are better at absorbing air pollution around tall buildings.

Scientists have decoded the genome of a snail involved in the spread of a deadly parasitic disease.

A leaked letter throws doubt on the legal basis for sharing 1.6 million patient records with DeepMind.

The uninhabited Pacific island is littered with 37.7 million pieces of plastic debris, scientists say.

Meet the scientist behind one of the biggest science projects in the Middle East.

How an entrepreneur is bringing water to the deserts of Pakistan by using goats as currency.

A fishing ban extension is said to be the best hope for the world's most endangered marine species.

The London-based satellite operator puts up a fourth spacecraft in its global broadband network.

Swansea University researchers are using the models to understand how best to use tidal power.

The iguana chase won Planet Earth II the Bafta for Must-See Moment.

How different Earth's history might have been if the space rock had struck a different location.

A pod of orcas make several close passes of a fishing boat off the coast of Orkney.

Tokamak Energy thinks its mini fusion generators will allow the company to test ideas faster than their competitors.

New research suggests that less dust means more dirty air in major Chinese population centres.

Tens of thousands of people marvel over shots of brightly lit Belgium taken from space.

A recent conference in Bahrain brought together experts in Islamic archaeology to discuss the lessons of the past and how to safeguard Muslim heritage for future generations.

President Trump will make "the right decision for the US" as he reviews the climate change policy.

A sheriff's helicopter crew warns paddle-boarders they are swimming with sharks off the California coast.

Two big cats including the African lion are most at risk from extinction due to loss of prey, say scientists.

Noam Chomsky argues the Republican Party is the most dangerous organisation in human history.

Campaigners say there should be greater scrutiny of industry bodies that are involved in UN climate talks.

Male Kentish glory moths are to be counted with the aid of bits of rubber coated in the scent of female moths.