The latest stories from the Science & Environment section of the BBC News web site.
Updated: 2 min 5 sec ago
Volcanic Mount Sinbung in Sumatra, Indonesia, erupts, while Mount Etna, Italy, blows smoke rings.
China's Tianhe-2 retains its status at the peak of the Top500 list of supercomputers, but IBM believes there are problems with the way it is calculated.
Is it right to waste helium on children's balloons?
Nasa's Maven mission launches on Monday, aimed at studying how and why Mars lost its atmosphere, once thought to be similar to Earth's.
How close are we to understanding dark matter?
Workers at Japan's stricken Fukushima nuclear plant begin removing fuel rods from a storage pond at the Unit 4 reactor building.
Young deer should also be killed when their mothers are shot, according to scientists.
Environmental groups sharply criticise the Polish government for hosting a coal industry meeting while UN climate talks are held in the country.
Is Poland's talk of a clean future for coal just a mirage?
Human emissions of carbon dioxide are increasing the levels of acidity in the oceans at rates not seen for millions of years, scientists say.
Eruption from Mount Etna lights up the night sky over much of eastern Sicily.
The Solar System is about to feel the force of the Sun's power when its magnetic field "flips" in the next few weeks.
The UK's Disasters Emergency Committee has urged countries to take urgent action on climate change, as UN talks enter their second week.
Jeremy Howell reports on the science of growing crops in the desert conditions of the Middle East.
Eight live big cats, hippo teeth and walrus horns were all seized by UK border officials in a record year for endangered animal items.
The government has announced a consultation over proposals to strengthen the powers of the forensic regulator's office in England and Wales.
Brazil says the rate of deforestation in the Amazon increased by 28% between August 2012 and last July, after four years of steady decline.
Two dinosaurs thought to have been locked in combat when they died are to be auctioned in New York next week.
More than 6 tonnes of illegal ivory were crushed in the US.
A fragile quantum memory state persists at room temperature for a record 39 minutes - overcoming a barrier to ultrafast computers.