BBC News

Paignton Zoo's 28-stone silverback Western Lowland gorilla, Pertinax, has had a root canal operation.

The high-pitched mating chirp of a group of crickets may have evolved from the insects impersonating predators, scientists say.

The United States has joined with a range of rich and poor countries at COP21 in an effort to secure a final agreement.

A rare Philippine eagle chick has hatched in captivity, giving conservationists hope for the critically endangered bird.

The world's first litter of "test tube" puppies has been born, paving the way for conserving endangered breeds and boosting efforts to fight human diseases, US scientists say.

US scientists unveil first litter of puppies born through in-vitro fertilisation (IVF).

Ministers issue the latest draft of a climate change agreement, at the climate change summit, as Rebecca Morelle explains

A white fossil held in a Washington museum since the 1920s is reassessed and found to be from a 15-million-year-old sperm whale cousin with enormous teeth.

Scientists think they can now explain the mysterious bright spots on Ceres, the largest object in the asteroid belt between Mars and Jupiter.

The European Space Agency signs a 350m-euro contract with Airbus to build a spacecraft to investigate Jupiter and its icy moons.

A critical new draft text is published at UN talks as the deadline looms for a global climate deal.

Nicholas Niksadat reports from Bologna, Italy, on the challenges facing solar energy producers.

In an informal experiment to learn how distinctive plane noise is, BBC News asked plane spotters to take a 'blind test'.

Agricultural and environmental experts in Namibia are hoping that lessons from past droughts can help farmers to fight back against climate change.

Denmark, the UK and Sweden top a chart of nations combating climate change - but the report was written before a UK policy 'reset' downgraded renewables.

Two men are charged after allegedly poisoning lions from a famous pride featured on a BBC wildlife programme in Narok, south-west Kenya.

Britain's wildlife is in an increasingly fragile state, with animals that carry out vital jobs for farmers being lost more rapidly than others, say scientists.

The European Union has formed an alliance with 79 African, Caribbean and Pacific countries in a final push for a climate deal at COP21.

Former California Governor Arnold Schwarzenegger says people should go meat-free one or two days a week to fight climate change.

An earlier portrait of the Mona Lisa has been found under the existing painting using reflective light technology, according to a French scientist.

Schools in Beijing are closed and outdoor construction halted as the Chinese capital's first ever pollution "red alert" comes into effect over smog levels.

Farmers need to dramatically cut the amount of antibiotics used in agriculture, because of the threat to human health, a report says.

Cambridge University's Professor Jerome Neufeld and Dr Bryan Lovell show environment correspondent Matt McGrath how carbon capture works.

How rising temperatures are speeding up Alaska's landslides

BBC environment correspondent Matt McGrath assesses the consequences if the UN Climate Change Convention in Paris fails.

After hundreds of millions of pounds were spent on flood defences, many people affected by the floods are asking how their homes could have been inundated yet again

Former Governor of California Arnold Schwarzenegger calls on world leaders to take action on climate action

Can flood defences always protect vulnerable communities from the impact of "exceptional" weather events, such as Storm Desmond?

For the first time, global emissions of carbon dioxide are likely to stall and perhaps decline this year, even as the world economy grows, according to new research.

As politicians make a final push for a global climate pact in Paris, the US energy secretary says the processes around verification and climate targets should be binding.

Recreating a pioneering computer - in a shed

A spacecraft carrying much-needed US supplies blasts off toward the International Space Station for the first time in months.

Environment and foreign ministers from all over the world gather in Paris on Monday in a final push for a new global climate compact.

The Premier of Alberta, Canada wants to completely phase out coal emissions.

The BBC's Pinpaka Ngmsom meets the wealthy Thai businesswoman being described as the driving force behind Asia's solar energy revolution.

The environmental questions facing the government

The UK government faces criticisms for an alleged mismatch between words and deeds on climate policy.

Delegates at a UN climate conference in Paris have approved a new draft text that they hope will form the basis of a global agreement.

Negotiators are edging towards a compromise on one of the most divisive issues between countries at the COP21 climate change talks in Paris.

The New Horizons probe has at last returned some of the super-sharp pictures it took of Pluto during its historic flyby in July.

A 20 year-old penguin that suffers from arthritis is being moved from his home on the Isle of Wight to a new enclosure in Great Yarmouth.

Why a supersonic car must live in a hybrid world

The BBC's Matthew Price is in Texas, the most oil-rich state in the US, to take your questions on climate change.

How energy storage could save the planet

The longstanding mystery as to why cells prefer the more "wasteful" process of fermentation has been solved and the solution provides a new perspective for cancer research, scientist say.

A new fossil of a strange, extinct three-horned ruminant may be a relative of the modern giraffe.

The British astronaut Tim Peake is going to run next April's London Marathon on a treadmill - in space.

BBC Click's Nick Kwek looks at some of the best of the week's technology news

More than 90% of migratory birds are poorly protected on their marathon journeys around the world, according to research.