The latest stories from the Science & Environment section of the BBC News web site.
Updated: 6 min 40 sec ago
A personal DNA test that has sparked controversy in the US launches in the UK.
Are we really at risk of smart machines killing us off?
Analysis of Richard III's DNA has thrown up surprising evidence of infidelity somewhere in his family tree.
Prof Stephen Hawking, one of the world's leading scientists, warns that artificial intelligence "could spell the end of the human race".
A personal DNA test that has sparked controversy in the US has launched in the UK.
HIV is evolving to become less deadly and less infectious as it spends more time infecting people, according to a major scientific study.
Delegates are set to meet in Peru to try and agree a negotiating text for a new global climate deal to be signed at the end of 2015.
Experts say they have achieved a scientific milestone - creating enzymes out of artificial genetic material that they made in their lab.
After one season of playing American football, some teenagers appear to show changes in their brains even when they did not suffer concussion, a small study suggests.
More than 50 science jobs at Kew gardens could go
Once hunted to near extinction, the humpback whales of the Canadian Pacific are back in larger numbers, and the government has downgraded their status from "threatened" to that "of special concern".
The "wonder material" graphene could be used to make bulletproof armour, new research suggests.
The government is reviewing the way grey squirrels numbers are managed in England, and is assessing whether more needs to be done to control numbers.
The possibilities of geo-engineering
Camera traps, used by a project assessing radioactive exposure impacts on wildlife, record the first photos of a brown bear in Chernobyl's exclusion zone.
Finding bounty in the depths of Davy Jones's locker
Why going green isn't good for everyone
Climate change and population growth will hugely increase the risk to people from extreme weather, a report says.
Did politics or science drive flood protection effort?
Royal Society says combination of population growth and climate change will increase danger to cities.