The latest stories from the Science & Environment section of the BBC News web site.
Updated: 2 min 18 sec ago
Astronomers have seen what could be the most powerful supernova yet detected - an event so big it shone with 570 billion times the brightness of our Sun.
The PCB chemical, banned in Europe in the 1980s, has been found in extremely high levels in Europe's whales and dolphins, scientists report.
African lions are set to gain greater international protection this year in the wake of the killing of Cecil in 2015.
Fog on Mars, storms on Jupiter and fiery flares on the Sun
The next ice age may have been delayed by more than 50,000 years because of the greenhouse gases put in the atmosphere by humans, scientists in Germany say.
A scientist is making her case to be the first in the UK to be allowed to genetically modify human embryos.
A vast, previously unrecognised canyon system could be hidden under the Antarctic ice sheet, say scientists.
Most seagrass meadows around the British coast are in a poor condition, say scientists.
A prehistoric giraffe that died out 10,000 years ago might have been the largest ruminant that walked the Earth.
A special vault has been built in the Arctic to store thousands of seeds, as scientists fear the impact of climate change and prolonged conflicts could have devastating consequences on food crops around the world.
Astronaut Tim Peake demonstrates what happens to water in space for the Stargazing Live programme.
Science editor David Shukman goes deep inside an Arctic mountain to see the world's most important seed store.
Birds from Russia and eastern Europe form what is known as murmurations, grouping together to create a spectacular show in the Middle Eastern sunset.
Archaeologists in Cambridgeshire uncover Britain's "Pompeii" with what they describe as the "best-preserved Bronze Age dwellings ever found".
Giant icebergs could be responsible for the processes that absorb up to 20% of the carbon in the Southern Ocean's carbon cycle, a study suggests.
US researchers say they have developed a technique that can significantly improve the efficiency of the traditional incandescent light bulb.
The first children with debilitating, "mystery" diseases have finally been given a diagnosis as part of a huge scheme to analyse people's DNA.
Senior MPs accuse David Cameron of double standards over climate change, ahead of his appearance before a Commons committee.
Chris Hadfield says he felt that David Bowie's Space Oddity showed the singer "recognised what it was going to be like" to be in space.
Space data is used to draw the deep anatomy of last year's devastating quake in Nepal, detailing how the rocks under the country ruptured and providing new insights on how the Himalayas are built.