Earth The scavengers stalking the world's cities From ibis to hyenas, a surprising variety of scavengers have been drawn to urban life. Here's how they're thriving in cities across the globe. These hungry insects chomp on plastic as food Floods cause widespread devastation in Kenya Future Earth: Sign up to our newsletter How Earth Day was born Future The 1968 photo that changed the world Future The rivers cleared by conveyor belt in Ecuador Future These are the neighbourhoods in most urgent need of trees Future This is how you make the world's oldest beer Future Future Planet California's beaches are home to wild fish orgies Millions of small fish fling themselves on Californian beaches to have sex – strictly under the full or new Moon. Future Texan skyscrapers go dark to save birds' lives About two billion birds fly through Texas in the spring – and lit-up buildings pose a deadly risk. A growing campaign seeks to save birds with darkness. Future World of Wonder Nasa reveals giant lava lake on Jupiter's volcanic moon New research suggests the fiery moon Io has been spewing lava for billions of years. See more Video Why giant hailstones are on the rise Although huge hailstones are still rare, there are signs that their frequency and size are increasing. Weather & science Listen to world's first 'chat' between humans and whales Scientists had a conversation with Twain, the humpback whale. It's the first ever recorded chat of its kind. Natural wonders England's 'largest gold nugget' discovered A metal detectorist has uncovered something pretty unexpected and highly valuable on farmland in rural England. Natural wonders Photos from the deep sea show 'exciting' new species Scientists exploring the ocean off the New Zealand coast believe they have discovered 100 new marine species. Natural wonders What 'zombie fires' are and why they pose a risk for Canada Over 100 fires in one province alone have been burning under the Canadian snow at an unprecedented rate. Weather & science Alaska's melting glaciers that rip homes apart Qasa Alom meets a team conducting research on Alaska's changing environment. Weather & science Mesmerising life in the deep sea Explore depths where volcanic fluids meet near-freezing seawater, creating a dynamic clash below. Natural wonders What happens when it rains space debris A bus-sized satellite has become the latest piece to fall to Earth. How often does that happen? Weather & science Why electric vehicles struggle in extreme cold Freezing temperatures affect electric vehicles in two major ways. Watch to discover how and why. Weather & science The spongy creatures cleaning Zanzibar's oceans As ocean temperatures rise, women in Zanzibar turn to natural sea sponge farming to stay afloat. Sustainable business The race to fix clean energy's waste problem While wind electricity is clean, this green industry has a waste problem. Now there's a race to solve it. Climate solutions Giving fashion from upcycled scraps Want to gift sustainably, dress stylishly, and help the planet? Scraps might be the answer. Green living 'It's like being in a farm from outer space' Tech-loving traveller Paul Carter visits a new kind of farm - one that has to be accessed via an airlock. Climate solutions Japan's testbed for future sustainability How a project near Fukushima has become a lab for demonstrating sustainable ideas for Japan and the wider world. Climate solutions How to ship solar power from sea to shore One company is developing a new way of transferring energy from sea to shore, and it's all powered by the wind. Climate solutions The sacred birds of longevity revered in Bhutan The black-necked cranes are a revered species across the Himalayas. Weather & science How to live a zero-waste life in a wasteful world Living a zero-waste life is great for the environment and your wallet. How does it work? Green living South Africa's all-female ranger squad A day in the life of the Black Mambas. Climate solutions Intense beekeeping and wildfires are harming Turkey’s bees Turkey’s bee populations are dwindling due to intense beekeeping practices and wildfires. Green living The luxury cars going electric Lara Lewington visits car manufacturer Bentley to find out how it is making the shift to electric. Green living Editor's picks UK court case launched over mining project in Brazil Brazil Iron calls itself a sustainable mining company. Local residents call its project a disaster. See more More Earth What is happening with Flamingo Land at Loch Lomond? A West Dunbartonshire Council meeting will discuss plans for the controversial resort. Glasgow & West Scotland Unexploded bomb found on Lincolnshire beach A controlled explosion was carried out, Mablethorpe Coastguard said. Science & Environment There's no need to shower every day - here's why Some experts believe that everyday showering is based more on a 'social contract' than actual need. Culture Runaway horses filmed racing through central London Video on social media shows two horses, one covered in blood, running through central London. London Bug splat survey shows decline in insect numbers The annual Bugs Matter survey is compiled by hundreds of volunteers across Kent and the UK. Science & Environment Lucky move that led to a love of marine wildlife Steve Truluck swapped engineering in London for whale and dolphin expertise in north east Scotland. NE, Orkney & Shetland Berkshire Big Picture: Wednesday's image of the county Showcasing the best images sent to us from around Berkshire. Berkshire Dorset Big Picture: Wednesday's image of the county Showcasing the best images sent to us from around Dorset. Dorset Oxfordshire Big Picture: Wednesday's image of the county Showcasing the best images sent to us from around Oxfordshire. Oxford