The latest stories from the Science & Environment section of the BBC News web site.
Updated: 29 min 57 sec ago
Details are emerging of plans to pay farmers who manage their land in a way that helps prevent flooding in towns and cities.
British-born astronaut Piers Sellers tells of living life at "20 times normal speed" after being diagnosed with terminal cancer.
Sir David Attenborough speaks to Huw Edwards about the discovery of a new species of titanosaur, which is the biggest animal ever to walk the earth.
US astronomers claim to have strong evidence that there is a ninth planet in our Solar System. We asked you to send us your suggested names for this new arrival.
Archaeologists say they have unearthed the earliest evidence of warfare between hunter-gatherers, at a site in northern Kenya.
Why do astronomers in the US think there they have discovered a ninth planet in the solar system?
The discovery of what may be the world's biggest dinosaur is told in a new BBC One documentary.
Three baby otters have been found outside a Florida home in Palm Shores.
A sperm whale stranded on a beach in Western Japan is dragged back out to sea by fishermen.
A tree frog that feeds its young unfertilised eggs and was thought to have died out more than a century ago has been rediscovered in India.
Scientists studying birds in the Himalayas discover that one species of thrush is in fact two.
Exposure to toxin from algae linked to dementia
Nevada desert home to ambitious transport project
Nasa's chief scientist says she is a bit "sceptical" about the existence of a ninth planet in our Solar System.
Global temperatures in 2015 were the warmest on record, according to data published by meteorologists in the UK and US.
A 201-million-year-old dinosaur that fell out of a cliff face in Wales in 2014 is formally named Dracoraptor hanigani - the "dragon thief".
American astronomers say they have strong evidence that there is a ninth planet in our Solar System orbiting far beyond even the dwarf world Pluto.
Five planets will align across the dawn sky on Wednesday in a rare treat for skywatchers.
Global temperatures in 2015 were the warmest since records began, according to data published by meteorologists in the UK and the US.
What is China doing to clean its air?