• 12 December 2019 Image copyright Professor Tim Blackburn /Getty Image caption Jimi Hendrix was wrongly blamed for the parakeet explosion after releasing two birds in Carnaby Street, LondonThe rumour parakeets arrived in the UK when rock star Jimi Hendrix released a pair in London's Carnaby Street in the swinging 60s has finally been scotched. They also did not escape across the country during...

  • By Jonathan Amos BBC Science Correspondent, San Francisco 11 December 2019 Related Topics AGU meeting Image copyright Copernicus Data 2019/ESA/Sentinel-2 Image caption The Sudd: Microbes in saturated soils will produce methaneScientists think they can now explain at least part of the recent growth in methane (CH4) levels in the atmosphere. Researchers, led from Edinburgh University, UK, say...

  • 12 December 2019 Image copyright Maxime Aubert / PA WIREA painting discovered on the wall of an Indonesian cave has been found to be 44,000 years old. The art appears to show a buffalo being hunted by part-human, part-animal creatures holding spears and possibly ropes. Some researchers think the scene could be the world's oldest-recorded story. The findings were presented in the journal Nature...

  • Image copyright YouTube/ThirtyVirus Image caption Researchers tried to teach AI agents how to look for diamonds on Minecraft using a technique called imitation learningIt takes minutes for most new Minecraft players to work out how to dig up the diamonds that are key to the game, but training artificial intelligence to do it has proved harder than expected. Over the summer, Minecraft publisher...

  • By Matt McGrath Environment correspondent 12 December 2019 Related Topics COP25 Media playback is unsupported on your device Media captionProtesters staged a sit in at UN climate talksEnvironmentalists and observers have been barred from UN climate talks in Madrid after a protest inside the conference. Around 200 climate campaigners were ejected after staging a sit in, preventing access to one...

  • By Helen Briggs BBC News 12 December 2019 Image copyright Getty Images Image caption A family of mammoths being sold at auctionScientists have calculated the lifespans of extinct animals, including ancient humans, from the DNA they left behind. Our extinct "cousins", the Neanderthals and Denisovans, reached the ripe old age of 38 years, less than half that of modern life expectancies. Woolly...

  • By Jonathan Amos BBC Science Correspondent, San Francisco 12 December 2019 Related Topics Climate change Media playback is unsupported on your device Media captionBedMachine Antarctic: Fly over the new mapThe deepest point on continental Earth has been identified in East Antarctica, under Denman Glacier. This ice-filled canyon reaches 3.5km (11,500ft) below sea level. Only in the ocean are the...

  • By Paul Rincon Science editor, BBC News website 13 December 2019 Image copyright Marc Durà Image caption The genome comes from a specimen held in a private collection in SpainA genetic study of the US's only native parrot appears to confirm its extinction was down to humans alone. Scientists sequenced the genome of a stuffed Carolina parakeet held in a private collection. The colourful...

  • By Jonathan Amos BBC Science Correspondent 13 December 2019 Media playback is unsupported on your device Media captionA taster from BBC correspondent Andrew Harding's Bloodhound film"We're 99% sure this car is capable of a land speed record that begins with the number 8." Mark Chapman, chief engineer on the Bloodhound car, is reflecting on the vehicle's high-speed trials this past November. The...

  • By Matt McGrath and Paul Rincon Science and environment, BBC News 14 December 2019 Related Topics COP25 Image copyright Getty ImagesUN climate talks appear to be in trouble as they head into extra time. Fault lines have re-appeared between different negotiating blocs, with one delegate describing a new draft text as "totally unacceptable". Alden Meyer from the Union of Concerned Scientists said...

  • By Nola Taylor Redd Science writer Image copyright SPL Image caption Artwork: Scientists are trying to work out the likely paths meteorites took as they fell toward EarthIn January 2018, a falling meteorite created a bright fireball that arced over the outskirts of Detroit, Michigan, followed by loud sonic booms. The visitor not only dropped a slew of meteorites over the snow-covered ground, it...

  • By Paul Rincon Science editor, BBC News website 3 December 2019 Related Topics COP25 Image copyright AFP Image caption Ms Thunberg has spent more than two weeks crossing the Atlantic in a catamaranClimate activist Greta Thunberg said that adults should stop making young people "angry" over global warming. Ms Thunberg was speaking after her arrival in Lisbon, Portugal, after a two-weeks-plus...

  • By Michael Baggs Newsbeat reporter 4 December 2019 Related Topics COP25 Greta Thunberg was on the wrong side of the world. She'd taken 14 days to cross the Atlantic on a carbon-neutral journey via boat for climate change summits in the US and Chile. But at the last minute political unrest meant the Chile talks moved to Spain. She needed a crew to take her back to Europe - and she needed them...

  • By Helen Briggs BBC News 4 December 2019 Image copyright Karen Russell Image caption The mighty elm once dominated the skylineThe elm tree can return to the British countryside, given a helping hand, according to a new report. More than 20 million trees died during the 1960s and 1970s from Dutch elm disease. In the aftermath, the elm was largely forgotten, except among a handful of enthusiasts...

  • By Matt McGrath Environment correspondent 4 December 2019 comments Related Topics COP25 Image copyright Getty ImagesResearchers say that carbon dioxide emissions this year have risen slightly, despite a drop in the use of coal. The Global Carbon Project's annual analysis of emission trends suggests that CO2 will go up by 0.6% in 2019. The rise is due to continuing strong growth in the...

  • By Kelsey Vlamis BBC News 4 December 2019 Related Topics Climate change Image copyright The Field Museum Image caption The researchers analysed 52 different species of migratory birdsAs the climate warms, birds are shrinking and their wingspans are growing, according to a new study. Researchers analysed 70,716 specimens from 52 North American migratory bird species collected over 40 years. The...

  • By Paul Rincon Science editor, BBC News website 4 December 2019 Image copyright ESO / M Kornmesser Image caption Artwork: The giant planet is losing its atmosphere to the white dwarfA newly discovered planet offers new insights into the Solar System after the Sun reaches the end of its life in 5-6 billion years. Astronomers observed a giant planet orbiting a white dwarf, the small, dense objects...

  • By Mark Kinver Environment reporter 5 December 2019 Image copyright V. Sork Image caption The study found that many trees were already struggling to cope with today's temperaturesTree conservation strategies based on genetic data are best suited for landscapes affected by a rapidly changing climate, a study suggests. Researchers found using genetic markers of climate resilient traits are more...

  • Image copyright AFP Image caption The Norwegian research ship Lance is about two days' trek from the explorersTwo explorers are short of food and battling strong winds after trekking hundreds of miles at the North Pole, but they hope to reach safety soon. South African Mike Horn and Norwegian Boerge Ousland have covered about 1,800km (1,120 miles) on treacherous drifting ice. Because of delays...

  • By Kelsey Vlamis BBC News 5 December 2019 Image copyright The Trustees of the Natural History Museum Image caption Researchers said they found 526 hermit crabs had been trapped inside one containerAn estimated 570,000 hermit crabs have been killed after being trapped in plastic debris, a new study has said. The researchers said piles of plastic on beaches create physical barriers and "deadly...