Big World, Little Ears

What if the world's smartest computers had a giant off switch? This week in London, British lawmakers asked exactly that. We follow the question from Parliament to your living room. 🤖 What AI is, in simple words 🏛️ How grown-ups make rules together 💡 Why people stay in charge of machines 💬 If you invented a robot helper, what rule would you give it? For curious kids aged 7-10 years. New epi...

What if a clock tower stood watch over flamingos, penguins and 160-year-old trees? In busy Mumbai, India, one does — inside a quiet garden and zoo, built before phones and watches. 🕰️ How people told time before everyone had clocks 🌏 Life in Mumbai, one of the world's busiest cities 🌳 Why old buildings are worth caring for 💬 What is the oldest thing near your home?

What if the steering wheel turned all by itself? In London, the UK's first self-driving taxis have started giving rides — with a human helper sitting inside, just in case. 🚕 How robotaxis 'see' with cameras, radar and spinning lasers 🌍 Why a safety driver rides along 🧠 How new ideas are tested step by step 💬 Would you ride in a car with no driver?

Can you find something you can't see, touch, or hear? Nearly a mile underground in South Dakota, scientists watch a tank of super-cold liquid for one tiny flash of light. This week they may have caught a clue. 🔬 How the LZ detector works 🌌 What dark matter is ⛏️ Why a lab hides in an old gold mine 💬 What would you build to catch something invisible?

What if most of the universe is invisible? NASA has launched a giant new space telescope built to explore dark matter and dark energy. We follow it from launch pad to a parking spot a million miles away. 🚀 How a telescope travels into space 🌌 What dark matter and dark energy are 🔭 Why big mysteries are fun 💬 Where would you point a space telescope?

Can old newspapers become a giant dragon? In Mexico City, artists mix scrap paper and flour paste into huge, bright sculptures called cartonería. We follow one giant paper artwork in a busy city square. 🎨 How papier-mâché art is made 🌎 Mexican folk art and alebrijes ♻️ Turning old paper into treasure 💬 What would you build from paper?

What if a swirling storm was named after YOU? Each September, weather experts in the UK, Ireland and the Netherlands pick 21 new storm names — and kids can suggest them! We find out how the list is made and why names keep people safe. 🌬️ How storms get named 🔤 Why Q, U, X, Y and Z are skipped 🌍 Three countries, one list 💬 What name would you choose for a storm?

Could a scorpion really be as big as your coffee table? Long before forests existed, giant sea scorpions glided through warm seas — and scientists measured one from fossil clues. 🦂 A table-sized ancient sea scorpion 🌍 A world with no trees or flowers 🔬 How fossils are made and read 💬 What might Earth look like millions of years from now?

What if a tiny instruction book lived inside every one of your cells? This episode explores DNA, why bodies slow down as they age, and how scientists are learning to help cells mend themselves. 🔬 What DNA is, in simple words 🐋 Why bowhead whales live 200 years 😴 How sleep helps cells repair 💬 What would you write in your body's book?

What happens to a giant hole when the digging stops? In Oaxaca, Mexico, an old green-stone quarry became a park with a mirror-like pool. We follow its journey from stone-cutting to shady paths. 🪨 Where green cantera stone comes from 🌎 How cities reuse old places 💧 Why still water acts like a mirror 💬 What forgotten spot near you could become wonderful?

Could a footprint last 240 million years? On a quiet Scottish beach, prints from a giant crocodile-like reptile sit in the rock — made before the first dinosaurs. We follow that ancient walker from mud to stone. 🐊 Life before the dinosaurs 🌍 Scotland as a hot desert 🔬 How footprints turn to stone 💬 What would your footprint say about you?

What if nobody had beaten you at something for fourteen whole years? That's how long swimming champion Katie Ledecky went unbeaten in the 800 metre freestyle — until young Australian swimmer Lani Pallister touched the wall first. A warm story about practice, patience and never giving up. 🏊 How swimmers train before anyone is watching 🌏 Australia's swimming culture 💪 Why the word "y...

Why is it so hard to sleep on a hot night? While you sleep, your body does quiet repair work — but first it must cool down. We visit a sleep laboratory to see what heat does to our rest. 🌡️ Why body temperature drops at night 🛏️ What scientists learn in a sleep lab 😴 Simple ways to sleep cooler 💬 What helps you fall asleep best?

What if a rule written hundreds of years ago could be rewritten this week? In tiny Liechtenstein, tucked between Switzerland and Austria, the ruling family's old rule said only a boy could lead the country. Now a girl can too — and we explore how that change happened, calmly and kindly. 🏔️ Where Liechtenstein is and why it's so tiny 👑 How old laws and traditions can be changed 🤝 How peop...

What if one photo needed three telescopes? Beyond our galaxy glows the Tarantula Nebula, a cloud of baby stars. Hubble, Webb and Chandra each saw different light, and scientists layered their photos into one colourful collage. 🔭 Telescopes see different light ✨ How stars are born 🤝 Teamwork makes discoveries 💬 What would you point a telescope at?

What if the biggest painting in the world was on a wall built to hold back a river? In a small Ohio town, a plain grey flood wall became a picture book almost two thousand feet long. We follow the artist who spent twenty years painting a whole town's story. 🎨 How murals turn ordinary walls into art 🌊 What a flood wall is and how it protects a town 🏘️ Why local history is worth remembering 💬...

What if water could hide in the dark for a billion years? Deep in a Canadian mine, scientists found ancient water, tiny life that never saw the sun, and a mystery fuel: hydrogen. 🔬 How scientists read the age of water 🌍 Why hydrogen could power buses and homes 🪨 How rock and water make energy bubbles 💬 What might be hidden under your town?

What if the instruction book inside your body could help computers think? Scientists placed DNA onto a tiny computer chip and built a memory that uses about 100 times less power. We follow how they did it and what it could mean for batteries, robots and our planet. 🧬 What DNA is and how it stores information 🔋 Why computers use energy just to remember 🌍 How nature inspires new inventions 💬 If...

How long is eight years? If you're eight, it's your whole life — and that's how long Finnish scientists studied children and screens. Their answer surprised everyone: it's not how much screen time, but what you do with it. We follow the "brain detectives" of Finland and discover how growing brains really work. 🧠 How brains build new pathways every day 🔬 Why good science...

Did you know a wildfire can build its very own giant cloud? In Utah, a NASA flying laboratory took off to fly alongside one of these towering fire clouds. We follow the plane and its scientists as they sniff, count and measure the smoke high above the mountains. ☁️ How heat and steam build a cloud 🔬 What instruments on a research plane do 🌍 Why smoke travels so far 💬 If you had one instrument o...

Did you know our galaxy grew bigger by joining with another one? Scientists found clues that 12 billion years ago the Milky Way merged with a galaxy nicknamed "Kraken." We follow that gentle, slow-motion story and discover how our home in space grew up. 🌌 What a galaxy is and where Earth lives in ours ⭐ How merging galaxies make brand new stars 🔭 How telescopes read starlight like a h...

What if the world's fastest car was also its quietest? Ferrari built its first electric car, and someone paid $40 million for it. We follow the story from a small Italian town to a thrilling auction. 🏎️ How electric motors work 🌍 Why quiet cars mean cleaner air 💰 What an auction is 💬 If you designed a car, what sound would it make?

What happens when the team everyone expects to lose... wins? Earlier this week, Bangladesh beat Australia in what fans are calling one of cricket's biggest upsets ever. We explore how patience, planning and teamwork can beat reputation. 🏏 How cricket works, explained simply 🌍 Life and street cricket in Bangladesh 💪 Why persistence beats being the favourite 💬 When did you surprise yourself...

Who really invented plastic? Not people! Scientists have discovered that tiny microbes have been making a natural, plastic-like material for millions of years, and animals everywhere have been quietly digesting it. We follow Bea the bacterium into the pond mud to meet nature's original bioplastic. 🔬 What bioplastic is and who makes it 🐛 How animals use tiny enzyme 'scissors' 🌍 Why t...

What if Earth once had no leaves, no claws and no eyes at all? Scientists have found tiny fossils 1.7 billion years old that may reveal how simple life became plants and animals. We follow one ancient cell, Nell, from a warm sea to a scientist's microscope. 🔬 How fossils form in rock 🌍 Earth before plants and oxygen 🧫 Why every cell in you is 'complex' 💬 What would you look at unde...