The latest stories from the Science & Environment section of the BBC News web site.
This year's El Nino weather phenomenon could be one of the strongest on record according to the World Meteorological Organization.
Scientists reveal the secrets behind the trees that can resist wildfires.
Trophy hunting has been the subject of much media attention, but is a blanket ban really the answer?
Unless something is done to stem the flow of waste to the oceans, virtually every seabird will be ingesting plastic debris by 2050, say scientists.
President Obama pushes for a global deal on cutting carbon emissions, saying it is time "to protect the one planet we've got while we still can".
The Buddhist country of Bhutan has won plaudits for its approach to tackling climate change, says Matt McGrath.
Nasa's New Horizons spacecraft has a new target to aim for following its historic flyby of Pluto.
British neurologist and acclaimed author Oliver Sacks dies at the age of 82.
A UK-built satellite delivered the first orbital picture to US disaster response coordinators following Hurricane Katrina. Ten years on, a British spacecraft has re-imaged the Mississippi Delta.
A rocket mission to put a new spacecraft in orbit for London-based Inmarsat is declared a success.
A team of Nasa recruits begins a year-long isolation in a dome near a barren volcano in Hawaii, to simulate life on Mars.
The badger cull is to be extended into Dorset following pilots in Gloucestershire and Somerset, the government announces.
A message in a bottle that washed up more than 108 years after it was thrown into the sea may be the world's oldest, a marine association says.
It's the first music video Niall, Liam, Louis and Harry have released without Zayn.
The government says it plans to significantly reduce subsidies paid to small scale green power installations.
Scientists develop a way to make ice cream smoother and less likely to melt so quickly on a hot summer day.
Neurologist and author Oliver Sacks dies of cancer aged 82
Scientists at Newcastle University are going in search of floods, trying to learn what causes them so they can prevent future flash flooding.
A team of Nasa recruits begins living near a barren volcano in Hawaii to simulate what life would be like on Mars.
Scientists say they can now explain what happened to Knut, the famous polar bear that drowned at Berlin Zoo in 2011.
The writer and environmentalist George Monbiot cooks dead squirrel in the Newsnight studio as he discusses the outraged reaction he got on social media after revealing he had cooked and eaten a "road kill" squirrel.
Thailand has been carrying out health checks on 14 orangutans, in preparation for their repatriation to Indonesia.
A team of marine life rescuers spend two days in freezing Icelandic waters to free a whale that had become entangled in fishing gear.
Turks and Caicos Islands debates marine mammal park
A life without mental images