BBC News

Nicaragua signs the Paris agreement, leaving only two countries not supporting it.

Stephen Hawking's PhD thesis, written as a 24-year-old, was made available to the public on Monday.

The great naturalist tells our science editor David Shukman why he'll never tire of his work.

The eight-year study finds infant sea creatures will be especially harmed by more acidic oceans.

Why one of the Earth's most remote places is the preferred place to dump space junk.

What's it like to live somewhere like Beijing, where you can even see pollution with the naked eye?

Researchers investigate how dogs change their expressions in response to their owners.

Vets in Colombia are nursing a tiny spider monkey back to health.

Prof Joanna Haigh from Imperial College London explains why this gas has played a crucial role in shaping the Earth's climate.

Flying insects have declined by more than 75% in 30 years in German nature reserves, alarming ecologists.

Animals were transported from as far away as the north east of Scotland to the Neolithic site in Wiltshire.

A shocking image of a dehorned black rhino makes Brent Stirton Wildlife Photographer of the Year.

New research casts doubt on the idea that dogs are naturally more tolerant and friendly than wolves.

Scientists convert the gravitational wave signal from merging neutron stars into sound.

Scientists detect the warping of space generated by the collision of two neutron stars.

The Saetereng family are trying to live a sustainable lifestyle in Akkarfjord, northern Norway.

World Land Speed record holder Andy Green describes the sensation of starting up the Bloodhound supersonic car for the first time.

The ‘Seabin’ can collect the equivalent of around 83,000 plastic bags a year.

A year in school adds nearly a year to your life, study in Edinburgh shows.

Sentinel-5P lifts off from Russia to make 20 million daily observations of pollution across the globe.

A US space agency satellite provides new insights on how CO2 is moved through Earth's atmosphere.

Only two chicks survived in a colony of 36,000 in a "catastrophic" breeding season in east Antarctica.

Fitted with a body camera, a sewer engineer tries to remove a blockage.

What will it take to build the ultra-fast internet of the future?

The changes are part of the Clean Growth Plan to reduce the UK's greenhouse emissions.

Rising global emissions of some chemicals could slow the progress made in healing the ozone layer.

A house-sized asteroid passes close to Earth, allowing scientists to rehearse future strike threats.

An Antarctic ice shelf is shown to have a deep gorge cut in its underside by warm ocean water.

Past mass extinctions have the potential to guide modern conservation efforts, say scientists.

A team of British scientists flies around Iceland's volcanoes to find out how to avoid future air traffic disruption.

We continue to buy new clothes at an incredible rate. How can manufacturers reduce fashion's environmental footprint?

The sighting in North Ronaldsay is believed to be the first time an adult male Siberian blue robin has been seen in the UK.

Black carbon trapped in the feathers of songbirds gives new insight into historic US air quality.

Key modifications for flight happened as early as 120 million years ago, a fossil discovery suggests.

UK scientists will take a ship to explore waters exposed by a huge new iceberg in the Antarctic.

Almost two thirds of mussels in the sea around Kent are contaminated with plastic particles, research has shown.

Teams from around the world are competing on solar cars in an epic transcontinental race.

A conservation project in Papua New Guinea could help secure the future for Britain's biggest butterfly.

RSPB Minsmere has about 200 red deer, one of the largest wild herds outside Scotland.

The Canadian zoo releases a compilation video of their giant panda cubs falling and tumbling.

Weather scientists first mistook the radar pattern to be birds, and turned to social media for help.

Conservation groups welcome government proposals for a full-scale ban on sales and exports.

The SS Thistlegorm, a British merchant steam ship, was hit by a German bomber in 1941.

The US vice-president expresses the intention for America to send humans back to the lunar surface.

A new study finds traces of neonicotinoid chemicals in 75% of honey samples from across the world.

The Nobel Peace Prize will be announced on Friday but where do the prizes come from?

The 2017 Nobel prizes for the sciences have all been announced, but many in the scientific community are pointing out the lack of female laureates.

New figures show the UK government failed to reduce illegal levels of air pollution in the 18 months after a court ordered it to clean up the air.

A major conference examines how to limit the more damaging impacts of intensive farming systems.

The remains of a passenger liner torpedoed by a U-boat just hours into the war may have been found.