BBC News

The species hasn't been seen in 15 years

Scientists find footprints - left by some of the biggest dinosaurs ever to have walked on Earth - in a bay on the Isle of Skye.

Attempts to keep global warming to 2 degrees will be wildly off course if all planned coal fire plants around the world are built.

Prince Charles says forest protection is starting to be taken seriously at the UN climate conference in Paris, but too many companies are turning a blind eye

Prince Charles is to call for better protection of the world's forests at the UN climate conference in Paris.

Japanese whaling ships depart for the Antarctic hunt, after a one year pause, despite international opposition.

Scientists set out this week to drill a hole into the Indian Ocean floor to try to get below the Earth's crust for the first time, testing theories about the make-up of the crust on the way down.

Kiribati President Anote Tong says that any possible climate deal is already too late for his country which is planning migration with ''dignity''.

US President Barack Obama says the key UN climate conference in Paris could be a "turning point" in global efforts to limit future temperature rises.

Leaders from 150 nations open a key UN conference in Paris aimed at reaching a deal on curbing carbon emissions to tackle global warning.

Prince Charles told world leaders to "think of your grandchildren, the same as I think of mine"

Sir David Attenborough tells BBC Breakfast that solar energy needs to "undercut the price of energy obtained from oil and coal."

South Africa grapples with worst drought in 30 years

Global leaders are to gather for a UN global warming summit in Paris, with the shadow cast by the recent attacks expected to boost chances of a deal.

Authorities in the Chinese capital Beijing issue their highest smog alert so far this year after pollution readings reach 17 times safe levels.

Demonstrations are getting under way worldwide to demand action to stop climate change on the eve of the UN summit in Paris.

The Pope's senior adviser on global warming has urged Catholics all over the world to join global climate marches planned for Sunday.

Japan decides to resume hunting whales in the Antarctic after a break of more than a year despite a ruling by the International Court of Justice.

Should powers station cooling towers be protected?

Is there an economic case for tackling climate change?

Psychologist Dr Uta Frith challenges unconscious bias

A study finds that tarantulas evolved almost exactly the same shade of vibrant blue at least eight separate times.

A large chunk of what is believed to have been an unmanned American space rocket is found in the sea off the Isles of Scilly.

The decision to allow shale gas drilling - or fracking - in Lancashire will be made directly by the government, it has emerged.

Lakes that have been forming near Mount Everest could threaten settlements downstream if they overflow.

A public opinion survey suggests that support for strong action on climate change has declined since 2009.

An experimental drone fitted with sensors is being deployed to monitor gases rising from rubbish dumps.

Scientists use ultrasound to scan the blood vessels of an entire rat brain in microscopic 3D detail, pioneering a technique they say will improve cancer and stroke diagnosis.

A South Africa court lifts a ban on the domestic trade in rhino horns which was imposed by the government in 2009 to stem poaching.

John Maguire visited Bristol, which has been serving as Europe's official Green Capital, to see what the city has achieved in 2015.

Spiders - and their prey - can be identified from the DNA they leave behind stuck on webs, say US scientists.

About 100,000 wetland birds are killed every year from poisoning by discarded lead ammunition, say scientists.

The strange world of enviro-jargon

Striking drone footage shows the extent of the retreat of Switzerland's Rhone Glacier, as scientists warn such magisterial ice-masses will have almost vanished by the end of the century.

Why one Danish hunter campaigns against the use of lead ammunition.

Ten years after being formally approved, Europe's ExoMars project is at last ready to send some hardware - a satellite - to the Red Planet.

Private investors are being invited to help fund the restoration of about one half of the UK's peatlands.

The UK government announces it is axing a £1bn grant for developing new carbon capture and storage (CCS) technology.

The UK chancellor has said that the science budget will be protected in real terms - equating to an increase.

Faced with a trade-off between shortest route and foraging power, army ants find the most cost-efficient route.

A study finds that army ants make a smart compromise when building a bridge from their own bodies.

An experiment in Italy seeks to find Albert Einstein's last great prediction - gravitational waves.

Everything you need to know about Einstein's 100-year-old Theory of General Relativity.

Temperatures across the globe are likely to break records in 2015 with readings running "well above" any previous year, scientists say.

The World Robot Conference in Beijing has drawn big crowds to its showcase of "jiqiren", or "machine people".

The hunt for Albert Einstein's missing waves

The Alaskan fishing village taking on 'Godzilla'