EarthA record number of sea lions gather in San FranciscoMore than one thousand of the animals visited a city pier - the region's biggest spike in 15 years.New Zealand's city built on a labyrinth of lava cavesDam bursts and death toll rises in Brazil floodsFuture Earth: Sign up to our newsletterThe gardeners allowing insects to eat their plantsFutureThese tricks make wind farms more bird-friendlyFutureThe women saving crumbling Tibetan monasteriesFutureWATCHInside the Icelandic plant turning CO2 into rocksClimate solutionsHow I tempted a frog to live in our gardenFutureFuture PlanetThese hungry insects chomp on plastic as foodWriggling critters armed with enzymes can break down plastics that would otherwise take decades, or even centuries to degrade.FutureHow Earth Day was bornEarth Day emerged from the disquiet that many people felt at the destruction of the natural world and has evolved into a global environmental movement.FutureWorld of WonderThis rare cicada emergence last happened in 1803Two broods of cicadas have started emerging simultaneously for the first time in 200 years. It's loud, messy and very interesting.See moreVideoAlaska's melting glaciers that rip homes apartQasa Alom meets a team conducting research on Alaska's changing environment.Weather & scienceNasa reveals giant lava lake on Jupiter's volcanic moonNew research suggests the fiery moon Io has been spewing lava for billions of years.Natural wondersWhy giant hailstones are on the riseAlthough huge hailstones are still rare, there are signs that their frequency and size are increasing.Weather & scienceListen to world's first 'chat' between humans and whalesScientists had a conversation with Twain, the humpback whale. It's the first ever recorded chat of its kind.Natural wondersEngland's 'largest gold nugget' discoveredA metal detectorist has uncovered something pretty unexpected and highly valuable on farmland in rural England.Natural wondersPhotos from the deep sea show 'exciting' new speciesScientists exploring the ocean off the New Zealand coast believe they have discovered 100 new marine species.Natural wondersWhat 'zombie fires' are and why they pose a risk for CanadaOver 100 fires in one province alone have been burning under the Canadian snow at an unprecedented rate.Weather & scienceMesmerising life in the deep seaExplore depths where volcanic fluids meet near-freezing seawater, creating a dynamic clash below.Natural wondersWhat happens when it rains space debrisA bus-sized satellite has become the latest piece to fall to Earth. How often does that happen?Weather & scienceWhy electric vehicles struggle in extreme coldFreezing temperatures affect electric vehicles in two major ways. Watch to discover how and why.Weather & scienceThe spongy creatures cleaning Zanzibar's oceansAs ocean temperatures rise, women in Zanzibar turn to natural sea sponge farming to stay afloat.Sustainable businessThe race to fix clean energy's waste problemWhile wind electricity is clean, this green industry has a waste problem. Now there's a race to solve it.Climate solutionsGiving fashion from upcycled scrapsWant 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 solutionsJapan's testbed for future sustainabilityHow a project near Fukushima has become a lab for demonstrating sustainable ideas for Japan and the wider world.Climate solutionsHow to ship solar power from sea to shoreOne company is developing a new way of transferring energy from sea to shore, and it's all powered by the wind.Climate solutionsThe sacred birds of longevity revered in BhutanThe black-necked cranes are a revered species across the Himalayas.Weather & scienceHow to live a zero-waste life in a wasteful worldLiving a zero-waste life is great for the environment and your wallet. How does it work?Green livingSouth Africa's all-female ranger squadA day in the life of the Black Mambas.Climate solutionsIntense beekeeping and wildfires are harming Turkey’s beesTurkey’s bee populations are dwindling due to intense beekeeping practices and wildfires.Green livingEditor's picksWounded orangutan seen using plant as medicineIt is the first time a creature in the wild has been seen using a medicinal plant to treat a wound.See moreMore EarthFour falcon chicks hatch in Glasgow university towerBirds of prey have nested at the university's Gilbert Scott Tower for around two decades.Glasgow & West ScotlandCelebrations to mark arboretum's 150th birthdayThe park in Walsall opened to the public on 4 May, 1874.Birmingham & Black CountryHampshire & Isle of Wight: Saturday's Big PictureShowcasing the best images sent to us from around Hampshire & Isle of Wight.Hampshire & Isle of WightDorset Big Picture: Saturday's image of the countyShowcasing the best images sent to us from around Dorset.Berkshire Big Picture: Saturday's image of the countyShowcasing the best images sent to us from around Berkshire.BerkshireOxfordshire Big Picture: Saturday's image of the countyShowcasing the best images sent to us from around Oxfordshire.OxfordIsland hosts photography show for first timeThe show features 59 photographs and 15 short films of wildlife taken in the Bailiwick of Guernsey.GuernseyDeveloper told to clear overgrown village footpathWalkers in a Devon village say neglect has made the footpath almost "impossible" to use safely. DevonMan addicted to collecting bird eggs is sentencedDaniel Lingham, 71, is sentenced again for illegally collecting thousands of wild eggs.Norfolk