The latest stories from the Science & Environment section of the BBC News web site.
Updated: 34 min 33 sec ago
A doctor reports from the Ebola front line
Aerial pictures show flooding across the desert region of Phoenix, Arizona, following torrential storms.
Which is the best eco option - eating beef, chicken or mussels?
For the first time, biologists measure the force applied by climbing snakes and find that they squeeze up to five times harder than necessary.
UK man keeps eye on dangerous asteroids
The man who can create traffic jams and other cyber-warriors
A new study suggests the number of Africa's elephants has declined to a critical point.
A primate confiscated during a drugs raid by police in the Maldives is flown 5,000 miles to the UK to start a new life.
A study suggests the way children draw at the age of four can be a predictor of intelligence 10 years later.
The research arm of the US military is looking into designs for new, hi-tech tanks, focusing less on armour and more on mobility and speed.
A man is killed by a giant saltwater crocodile as he fished with his wife in northern Australia - the fourth fatal attack this year.
Basing their work on the techniques used by octopuses and cuttlefish, US engineers have produced a flexible, colour-changing material.
Two Russian cosmonauts set off on a spacewalk from the International Space Station (ISS) to launch a nano-satellite.
Two rare birds usually found in the Mediterranean region are spotted building a nest at a nature reserve in Lincolnshire.
The risk of an eruption at Iceland's Bardarbunga volcano has increased, as well as the risk level to the aviation industry, meteorologists say.
Africa's elephants have reached a tipping point, where more are being killed each year by poachers than are being born, a study suggests.
A gorge in Taiwan, cut through rocks raised by a 1999 earthquake, is disappearing at an unprecedented rate, along with geological evidence.
The two brightest planets, Jupiter and Venus, are currently aligned in the sky, forming a spectacular "double star" in their closest conjunction since 2000.
Doctor puts a high-meat diet to the test
Amazon river turtles communicate with their hatchlings and with one another using vocalisations, recordings reveal.