The latest stories from the Science & Environment section of the BBC News web site.
Updated: 5 min 48 sec ago
National Tree Week celebrates 40 years
Scientists have practically obliterated the ultimate symbol of maleness in DNA, the Y chromosome, and believe they may be able to do away with it completely.
More than 3,500 postgraduates will be trained in engineering and science under a £350m scheme announced by the government.
The UN climate negotiations in Poland are left reeling after green campaigners walk out, but some negotiators say progress is possible.
A huge cosmic explosion, detected earlier this year, is confirmed as the brightest ever seen.
The government says it will create 27 new Marine Conservation Zones (MCZs) to protect wildlife in the seas around the English coast.
The United Nations Environment Programme issues a warning about the dangers posed by nitrous oxide, the so called "laughing gas".
Chinese city using hot waste water from refinery to warm homes
The Japanese coastguard and earthquake experts say a volcanic eruption has raised a new island in the seas to the far south of Tokyo.
A Russian Dnepr rocket puts 32 objects in space - a record for the most payloads carried to orbit in a single mission.
The chair of the Lords science select committee urges ministers to stop funding "pet projects" and develop a long-term science strategy.
Scottish First Minister Alex Salmond has said that we need to put an economic value on nature, in order to save it.
The RSPCA warns that the number of horses and ponies being abandoned this winter may increase as owners struggle to find money to care for them.
Campaigners say it is time the regulations on pigswill were relaxed to counter food waste and limit the unnecessary imports of grain.
The "most waterproof material ever made" - inspired by nasturtium leaves - could be used for anoraks, wind turbines and aircraft engines, say researchers.
A lack of practical lessons in schools in England means many teenagers are struggling with science, inspectors from the watchdog Ofsted warn.
A rock discovered in the Sahara Desert is the oldest Martian meteorite ever found, a study suggests.
Scientists have developed a non-invasive test that can predict whether men with zero sperm counts are capable of fathering children through IVF.
Putting an economic value on nature could be the best way to protect it, says business leaders and environmentalists meeting at an Edinburgh forum.
The fungus that is decimating amphibians worldwide has claimed one species of Darwin's frog and may soon claim the other, scientists say.