• 24 May 2019 Related TopicsSchools' climate change protests Image copyright Getty Images During the last worldwide school strikes in March, BBC News asked for your questions on climate change. Since then, thousands of you have been talking to our climate change chatbot on Facebook Messenger.Below are some of the topics that came up many times - with some answers from science and our climate...

  • By Jonathan Amos BBC Science Correspondent 24 May 2019 comments Media playback is unsupported on your device Media captionThe Falcon-9 rocket launched from Cape Canaveral in FloridaThe SpaceX company has begun the roll-out of its orbiting broadband system.A Falcon-9 rocket launched from Cape Canaveral in Florida late on Thursday, packed with 60 satellites capable of giving users on the ground...

  • By Matthew Stanley Author 24 May 2019 Related TopicsWorld War One Image copyright Science Photo Library Image caption Einstein (left) and Eddington (right) only met for the first time years after the end of World War One It is hard to imagine a time when Albert Einstein's name was not recognised around the world. But even after he finished his theory of relativity in 1915, he was nearly unknown...

  • 24 May 2019 Image copyright Science Photo Library Image caption The summit of Everest stands at 8,848m (29,029ft) Three more climbers have died on Mount Everest, taking the death toll to seven in a week - more than the total for the whole of last year.The three died of exhaustion while descending on Thursday.It comes amid traffic jams near the summit as record numbers make the ascent, despite...

  • 24 May 2019 Image caption Oil flattens the sea surface, reflecting radar energy away from the satellite. Oil therefore appears dark A sizeable oil slick developed in waters where tankers were damaged off the United Arab Emirates on 12 May.Finnish company Iceye says one of its radar satellites detected a long trail leading from the Saudi-flagged vessel Amjad two days later.The crude oil tanker...

  • 24 May 2019 Related TopicsSchools' climate change protests Media playback is unsupported on your device Media captionBelgium students among one million expected in more than 100 countriesSchool students around the world have gone on strike to demand action on climate change.Organisers said more than a million people were expected to join the action in at least 110 countries on Friday.They are...

  • 23 May 2019 Image copyright ULAS Image caption The shield was preserved due to being left in a waterlogged pit A 2,300-year-old Iron Age shield has been revealed by archaeologists.Found during a dig near Leicester in 2015 and dated to between 395 and 255BC, the shield was made of painted bark, backed by wooden spars.Analysis showed it had been badly damaged, probably by spears and edged weapons,...

  • By Roger Harrabin BBC environment analyst 23 May 2019 Image copyright PA Britain’s wealthy elite are being asked to dip deep into their pockets to protect the environment and the climate.A group of scientists has written to the top 100 wealthiest charitable bodies and families to request funding.They say efforts to tackle what they call the ecological crisis are "desperately...

  • By Matt McGrath Environment correspondent 22 May 2019 Image copyright Getty Images Image caption Much of the CFC-11 gas has been used in home insulation Researchers say that they have pinpointed the major sources of a mysterious recent rise in a dangerous, ozone-destroying chemical. CFC-11 was primarily used for home insulation but global production was due to be phased out in 2010. But...

  • 21 May 2019 Image copyright Getty Images Image caption Loved ones are given the soil to keep Washington has become the first state in the US to legalise human composting.Under the new law, people there can now choose to have their body turned into soil after their death.The process is seen as an alternative to cremations and burials, and as a practical option in cities where land for graveyards...

  • By David Shukman Science editor 22 May 2019 comments Image copyright Reuters In a bid to limit ocean pollution, the UK government will introduce new controls on single use plastic items next year.The measures cover plastic straws, plastic drinks stirrers and plastic cotton buds in England from April 2020. Only plastic drinks stirrers will be totally banned from sale - currently 316 million are...

  • By Matt McGrath Environment correspondent 20 May 2019 comments Media playback is unsupported on your device Media captionHow climate change is sinking an Indian islandScientists believe that global sea levels could rise far more than predicted, due to accelerating melting in Greenland and Antarctica.The long-held view has been that the world's seas would rise by a maximum of just under a metre...

  • By Rozina Sini Washington DC 17 May 2019 Image copyright India Jackson When India Jackson was offered a truly out-of-this-world internship at space agency Nasa she was delighted.There was just one problem: India would have to fund her and her daughter's travel and living expenses for the opportunity to work at Nasa's Johnson Space Center in Houston for 10 weeks. The 32-year-old physics PHD...

  • 20 May 2019 Image copyright Greenpeace Image caption The activists are calling on BP to end exploration for oil and gas Climate activists inside five large containers have blocked the entrances to BP's head office in central London.The Greenpeace protesters used cranes to transport the heavy boxes into place at St James's Square in the early hours of the morning.Other campaigners abseiled down...

  • By Mark Kinver Environment reporter, BBC News 18 May 2019 Image caption Should brown rats be allowed to breed and multiply without their numbers being controlled? The idea that you cannot kill any animal is "fatally flawed" as a conservation concept, scientists argue.Conservation measures should concentrate on species or habitats rather than individual animals, they observe.Invasive species,...

  • By Navin Singh Khadka Environment correspondent, BBC World Service, India 17 May 2019 Related TopicsIndia elections 2019 Image caption India's CO2 emissions is predicted to roughly double by 2040 India's major political parties competing in the ongoing general elections have pledged free electricity to farmers, ambitious infrastructure projects and rapid expansion of the manufacturing sector....

  • 17 May 2019 Related TopicsBrazil dam collapse Media playback is unsupported on your device Media captionBrazil's mining dams: A disaster waiting to happen?Brazil's mining firm Vale has warned that another dam is at risk of bursting months after the collapse of a similar structure killed more than 230 people.The dam near the south-eastern city of Barão de Cocais could burst next week if...

  • 17 May 2019 Image copyright oncfs Image caption France released two Slovenian brown bears in the Pyrenees last October A female brown bear released in the French Pyrenees has killed eight sheep in Spain, prompting emergency talks between the two countries.Claverina is now roaming through the mountains of Navarre, having crossed from Béarn in south-western France.Spanish environmental...

  • By Lindsay Brown Newsbeat reporter 17 May 2019 Image copyright Getty Images Image caption Fancy some crispy crickets for lunch? Not that long ago, many of us would grimace at the idea of eating raw fish, crunching on kale or slurping on a chia smoothie. Now thousands of us munch on California rolls doused in soy sauce during our lunch break without a second thought. But what about adding some...

  • By Jonathan Amos BBC Science Correspondent 17 May 2019 Related TopicsFranklin rover Mars mission Media playback is unsupported on your device Media captionA delicate operation: The ALD is lowered into the body of the roverIs it possible? Is there life on Mars? Ever since the Mariner 4 probe made the first successful visit to the Red Planet - a flyby in July 1965 - we've sent a succession of...