The latest stories from the Science & Environment section of the BBC News web site.
Updated: 33 min 43 sec ago
The World Health Organization classifies Kenya as a high-risk country for the spread of Ebola, as the number of people killed by the virus rises.
A 10 foot long fish which used to dominate the Amazon river has been fished to extinction in a number of areas, a new study shows.
An Iranian mathematician working in the US has become the first ever female winner of the celebrated Fields Medal.
A replica mammoth is walked along a beach in Norfolk retracing the steps of its extinct ancestors that roamed the area more than 700,000 years ago.
The international chemical weapons watchdog says all the precursor chemicals for sarin gas removed from Syria have now been destroyed.
The waste fibres from hemp crops can be transformed into high-performance energy storage devices, US scientists say.
One of the world's rarest turtles hatches at Bristol Zoo Gardens.
The outlook for Australia's Great Barrier Reef is poor despite conservation efforts, with further deterioration expected in coming years, a report says.
A type of genetically engineered fly which eventually kills itself off can be an effective method of pest control, according to new research.
Infusing tiny spheres of gold into the heart of cancer cells may help boost the effectiveness of conventional treatment, according to recent research.
Iranian mathematician Prof Maryam Mirzakhani becomes the first woman to win a Fields Medal at a ceremony in Seoul, South Korea.
The Antarctic midge has the smallest insect genome sequenced to date, scientists discover.
Archaeologists who unearthed a burial site at Amphipolis in northern Greece have made an "exceptionally important find", PM Antonis Samaras says.
Untested drugs can be used to treat patients infected with the Ebola virus, the World Health Organization says.
Four of the world's emerging economies have claimed that they are far ahead of developed countries in their efforts to slow climate change.
A lion cub has led forest rangers to its mother's corpse in an Indian sanctuary, an act described by officials as very unusual behaviour.
Edinburgh Zoo said it 'believes' its panda Tian Tian is pregnant and may give birth at the end of the month.
Research carried out at Aberdeen University suggests hen harriers can co-exist with profitable grouse shooting.
A zoo in southern China unveils newborn panda triplets, thought to be the world's first known surviving trio.
Under sea feeding grounds for young fish are being lost at the same rate as Amazonian rain forests and could damage the fishing industry, scientists in Swansea warn.