(BBC) Spreading iron in the oceans as a climate "fix" could poison marine mammals and birds, scientists show.
(BBC) UN wildlife negotiations begin on banning the trade in bluefin tuna and permitting sales of ivory at a two-week summit in Doha.
(BBC) A radar experiment aboard India's Chandrayaan-1 lunar spacecraft detects large deposits of water ice near the Moon's north pole.
(BBC) Countries can miss the deadline for sending emissions pledges to the UN, as greens mull the latest US election.
(BBC) The decline of honeybees seen in many countries may be due to reduced plant diversity, research suggests.
The global supply of a key anti-malaria drug is set to be boosted by a study of its genes, scientists say.
(BBC) Where climate change is seen as God's will
(BBC) Reconnecting flood-plains to rivers will help reduce the risk of future flooding, a study by US researchers suggests.
UN Secretary General Ban Ki-moon says a US-backed climate deal is a good beginning, but critics dismiss it as a failure.
(BBC) Talks remain deadlocked at the protest-hit climate summit in Copenhagen as world leaders join efforts to seal a deal.
(BBC) Formal negotiations reopen late in the evening at the UN climate summit in Copenhagen after a delay of nine hours.
(BBC) Talks are back on track at the UN climate summit after developing countries won significant concessions following a walk-out.
A senior UK minister issues a warming about acid levels in the oceans as the Copenhagen climate summit resumes.
(BBC) Emissions of some greenhouse gases are substantially higher than companies and countries report, say scientists.
Carbon emissions must fall within a decade to keep the global temperature rise under 2C, the UK Met Office says.
(BBC) The first decade of this century has been the warmest on record, say the UN's World Meteorological Organization.
(BBC) At least 40 world leaders are likely to attend December's UN climate summit in a bid to secure a new global treaty.
(BBC) The recession provides a chance to build a low-carbon future, says the International Energy Agency, if governments act quickly.
Japan's PM-elect Yukio Hatoyama pledges a 25% cut in greenhouse gas emissions by 2020, much more than his predecessor.
(BBC) Project to resurrect the iconic Polaroid camera
The leaders of 10 African countries will meet in Ethiopia to try and agree a common position on climate change.
Parts of India are on track for severe water shortages. according to results from Nasa's gravity satellites.
The longest total solar eclipse this century crosses Asia, with swathes of India and China plunged into darkness.
(BBC) The UN discusses rules aimed at cutting the emission of greenhouse gases from shipping.
(BBC) Almost a third of species of open ocean sharks are under threat of being wiped out by overfishing, say scientists.
Officials are gathering in Madeira to hammer out a deal on whaling, with Japan and Iceland likely to insist on their right to hunt.
(BBC) Construction begins at the site of the world's first commercial spaceport, a project aimed at revolutionising space exploration.
(BBC) Wind farms on the US's high plains could eventually help power the country's coastal population centres, experts say.
(BBC) Chances of a peace deal between pro and anti-whaling nations this year are slim, a report seen by the BBC shows.
(BBC) Engineers work on new ideas to clean up space
Oil firms shelve plans to carry out undersea seismic work to ensure the gray whales' breeding season is undisturbed.
(BBC) EU fishing fleets need major cuts if stocks are to be managed sustainably, the European Commission says.
Forests' role as massive carbon sinks is "at risk of being lost entirely", a global assessment warns.
The trade in orangutans, particularly babies, is taking the Sumatran species towards extinction, a report concludes.
(BBC) An ice bridge that holds in place an ice shelf the size of Jamaica snaps, heightening concern over the impact of global warming.
(BBC) Montserrat's "mountain chicken" frog is the latest victim of the lethal fungus sweeping the world.
The Maldives leader says his country will be carbon-neutral within a decade by switching to renewable energy.
(BBC) Increasing levels of acidity in oceans could trigger a mass extinction of sea life, a leading scientist warns.
(BBC) Astronomers believe they have seen the first pair of black holes orbiting each other at the centre of a distant galaxy.
(BBC) 1.5 million-year-old footprints found in Kenya indicate modern foot shape and walking style had already developed by that time.
(BBC) Europe's Cern is losing ground in the race to identify one of the fundamental particles of matter, its US rival claims.
(BBC) Alien life-forms may be thriving right here on Earth, a physicist tells a major science conference.
US and Russian satellites collide in space, creating a cloud of debris above Siberia in the first reported accident of its kind.
(BBC) Remarkable footage of elusive narwhal is captured by a BBC team.
(BBC) Using ultra-short laser pulses, scientists hope to understand how plants harvest the Sun's energy.
(BBC) The smallest planet yet found outside the Solar System is detected by a French space telescope.
(BBC) Why the silence on population needs to be broken
(BBC) Biogas produced from waste could heat almost half the UK's homes, lowering greenhouse gas emissions, a report says.
(BBC) Marine ecosystems risk being severely damaged by ocean acidification unless there are dramatic cuts in CO2 levels, warn scientists.
(BBC) A team of environmental researchers in the US warns many effects of climate change are irreversible.