The latest stories from the Science & Environment section of the BBC News web site.
Updated: 11 min 37 sec ago
An Australian goldfish called George is recovering from successful microsurgery in which a large tumour was removed from his brain.
A new study suggests that the contamination of drinking water by shale gas is due to faulty wells and not hydraulic fracturing.
Nick Higham talks to Israeli historian Yuval Noah Harari about his book Sapiens: A Brief History of Humankind
Europe's Rosetta mission, which aims to land on a 4km-wide comet later this year, identifies what it thinks is the safest place to touch down.
The Chinese sturgeon, thought to have existed for more than 140 million years, is now on the brink of extinction, say local media.
Have Saudis done enough to keep Hajj safe from deadly virus?
Construction has begun on a giant observation tower in the heart of the Amazon basin in Brazil to monitor climate change.
The European Space Agency is about to announce the site on Comet 67P where the Rosetta mission will try to make a historic landing.
In a significant step forward for shark conservation, all trade in five named species is to be regulated from today.
Why do terrapins live in canals?
Dams and reservoirs could mitigate South Asia floods
What impact could Scotland vote have on research?
Formula E is backed by some of the biggest names in the industry and on Saturday Beijing will hold the inaugural race of the season.
As drugs pass through us, they enter the UK's waterways., leading to a startling change in the habits of wildlife.
The Advanced Ligo instrument, a laser "ruler" built to measure the traces of gravitational waves, is progressing at amazing speed, scientists say.
Designers of new Mars instrument draw on nature
Western Australia's shark cull is to be halted after the state's environmental regulator advised against it, citing "scientific uncertainty".
In a shantytown in Rio De Janeiro, a British-backed scientific initiative harnesses the energy we generate in our daily lives to light up a football pitch.
The brain is still active while we sleep, say scientists, who found people were able to classify words according to their meaning during their slumber.
A robot unveiled today at the British Science Festival will be loading dishwashers next year, its developers claim.