BBC News

In the past year, more than 20 rangers have been killed defending Africa's oldest national park.

AI software can now match footage of motorists throwing rubbish with their car's number plate and issue an automatic fine .

How the priceless skull of an ancient ancestor was brought to the UK from South Africa for study.

Stefan Christmann spent almost 15 months in Antarctica alongside 10,000 emperor penguins.

A long-awaited report says the US president should ignore calls for a ban on autonomous weapons.

Spacecraft that can see through cloud get their first good look at the frozen block known as A74.

Social media users reported seeing a 'flash' with a 'tail of orange light' in the night sky.

Wildlife experts urge the prime minister to step up action on the loss of species in the UK.

Foreign ambassadors say Boris Johnson's tacit support for the mine prompts accusations of hypocrisy.

The ornate discovery was used during festivities and parades almost 2,000 years ago, experts say.

Prof John Mallard, formerly of Aberdeen University, was known for his pioneering work in medical imaging.

The berg covers 1,270 sq km - nearly 490 square miles - but its break-off was expected.

Nations' current carbon-cutting plans will not keep global temperature rise below 1.5C, the UN says.

The National Trust is planning to plant dozens of blossoming trees to create new green spaces.

Protected land reserved for Brazil's indigenous communities is being traded on the social network.

A computer program that can solve 1980s exploration games could help improve robot intelligence.

Researchers are developing new technology to help reduce human-elephant conflicts.

The 19th Century fossil hunter's achievements were often overlooked during her own lifetime.

Jamie Hill said taking the stunning photos of the northern cardinal was "once in a lifetime".

Scientists say a pledge by shooting groups to phase out lead shot has had no detectable effect.

Walker Swamp had been destroyed by 150 years of farming - now it is replenished and welcoming life.

Campaigners call for Chancellor Rishi Sunak to make system changes including a carbon emissions tax.

Scientists determined the painting's age by examining ancient wasp nests around the artwork.

Numbers are plunging due to pollution, unsustainable fishing and the draining of rivers.

The SpaceX mission will make Hayley Arceneaux the first person with a prosthesis to visit space.

The Perseverance robot is seen touching down on the Red Planet in a whirl of dust and grit.

Frozen wind turbines are being blamed for power failures - but problems with fossils fuels are a bigger issue.

Director Martin Scorsese says streaming algorithms demean cinema and treat viewers as consumers.

Nasa releases an astonishing image of its new Mars robot taken just moments before touchdown.

Nasa told the singer they would play his cover of David Bowie's Life On Mars as they landed

Re-joining the Paris climate pact is a symbolic and practical first step for the Biden White House.

The rover touched down successfully on Thursday in Mars' Jezero Crater.

With two missions to land on Mars in 2021, Laura Foster looks back at all the previous attempts.

Twenty years on from the start of the foot-and-mouth crisis, the Covid parallels appear stark.

We answer some common questions about the American Perseverance rover mission to Mars.

The new agency will help "cement the UK's position as a science superpower", the government says.

Perseverance will now spend at least two years looking for evidence of past life on the Red Planet.

Jon Doulman built a unique prosthetic after hearing about Triumph, a koala born without a foot.

As the US rejoins the Paris accord on Friday, we look at how much extreme weather events are costing the country.

A retired police officer found the rare silver and gold jewellery, which has been declared treasure.

From dressing properly, to keeping warm in power cuts, to signalling for help when stranded.

A report examines the potential of materials that can change shape, adapt and repair themselves.

Nasa's Perseverance rover is aiming for Jezero Crater, considered “too dangerous” for previous spacecraft.

The government hopes to claw back money from a £1.5bn fund to promote home insulation.

Scientists use AI to tackle the puzzle of where a new coronavirus could emerge.

The shark population off Congo-Brazzaville is threatened as desperate fishermen search deeper waters.

Himalayan songbirds in colder, more elevated environments have feathers with more fluffy down.

Freezing temperatures have been recorded across the usually hot southern US state.

Solving global warming would be “the most amazing thing humanity has done”, says the billionaire.

As artificial intelligence systems get more prevalent, some of us already have computers as managers.