COP21: Ban Ki-moon full speech at start of Paris climate change talks
UN Secretary-General's speech at the start of the COP21 Paris negotiations
COP21: World leaders gather on opening day of Paris climate change talks - as it happened
World leaders attend the opening day of the Paris climate change negotiations.
Paris COP21 climate talks: What is the 2C limit and what happens if global warming exceeds it?
What does it mean when scientists talk about going over 2C warming by the end of the century?
Humai wants to resurrect the dead with AI, cloning and nanotechnology – but is it real?
US 'entrepreneur' Josh Bocanegra claims they will be able to achieve everlasting life by 2045.
Supermassive black hole gobbles up star then burps out high-speed flare from event horizon
Scientists observe black hole swallowing a star and ejecting a flare of matter almost at the speed of light.
Scientists make flatworm grow head and brain of different species
Flatworm grows brain and head characteristics without scientists altering genomic sequence.
JFK wanted to go to Mars not the Moon – but engineers told him it was 'a little bit too far'
Buzz Aldrin reveals John F Kennedy's ambitious plan to go to Mars in the 1960s.
COP21: Paris climate change talks far more positive than Copenhagen - but expectations must be limited
Michael Mann says Paris climate negotiations are unlikely to get us to within 2C target – but that's OK.
Turkey: Vast ancient underground city was permanent home to thousands 'rewriting history'
Turkish authorities say 5,000-year-old city had chapels, homes and production spaces.
Medieval pocket Bibles weren't made from the skin of unborn calves
Medieval mystery of source of animal parchment in pocket bibles solved.
Chile whale stranding: 337 sei whales found dead off Patagonia 'beyond the ordinary'
Whale expert weighs in on what is thought to be the biggest whale stranding ever recorded.
COP21: What's the difference between climate change, manmade climate change and global warming?
Explaining the semantics around climate change.
World's biggest animal cloning factory being built in China
Commercial animal cloning centre in Tianjin will recreate sniffer dogs, pets and racehorses
Destruction of Mars moon Phobos will create ring around Red Planet lasting 100 million years
Phobos will likely fall apart in between 20 and 40 million years to form a ring around Mars.
Earth's Great Oxidation Event: 'Multiple whiffs' of O2 2.5 billion years ago led to stable atmosphere
Bursts of oxygen were released until a "tipping point" was crossed in Earth's atmosphere.
Tamu Massif: World's biggest volcano is a giant hybrid blob 10 times the size of Mount Etna
Scientists begin learning some of the secrets of Tamu Massif, the biggest volcano on the planet.
Hobbit teeth shows Homo floresiensis was unique species that shrank after getting stranded on Flores
Study of Homo floresiensis teeth shows it was unique species – not a human with growth disorder.
Parasitic roundworm infections can increase fertility in women in the Amazon
Study finds parasitic worms can either increase or decrease reproduction rate in Amazonian women.
Cancer-free Tasmanian Devils returned to homeland in a bid to save species from extinction
Group of 22 healthy Tasmanian Devils sent home to save species from cancer that threatens them with extinction.
Antibiotic resistance: New gene found in China heralds breach in last line of defence
Gene that allows bacteria to become resistant to polymyxins widespread in south China.
Vocal cord tissue grown in lab produces sound when transplanted into mice and dogs
Laboratory-grown vocal cord tissue has potential to restore voices to people who have lost them from cancer and injuries.
Having sex every day doesn't make you happier – once a week will do
Couples who have sex just once a week are happiest in their relationships, according to researchers.
Jonah Lomu: What is the rare kidney condition nephrotic syndrome?
New Zealand rugby player Jonah Lomu died at the age of 40 in Auckland.
Retreating glaciers caused Adelie penguin population explosion over last 14,000 years
Since the last ice age, Adelie penguin populations have seen a 135-fold increase.
Extreme laser could heat material to temperatures hotter than Sun's centre in 20 quadrillionths of a second
Super laser that heats material to 10 million degrees has potential in thermonuclear fusion energy.
Alcoholism drug disulfiram touted as 'game-changer' in search for HIV cure
Disulfiram found to wake up HIV hidden in the body, Australian scientists say.
Map of Earth's hidden groundwater to help scientists establish when it will run out
First map of groundwater shows 23 million cubic kilometres hidden beneath planet's surface.
Primordial goo from beginning of life on Earth used to prevent implant rejection
Prebiotic compounds used to coat medical implants to reduce risk of rejection.
Antibiotic resistance: WHO reveals woeful misconceptions about global health crisis
Survey shows 64% of people believe antibiotics can treat colds and the flu.
World Antibiotic Awareness Week: Why resistance matters and what you can do to help
PHE's Diane Ashiru-Oredope talks about the first ever World Antibiotic Awareness Week.
