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We take your questions about life, Earth and the universe to researchers hunting for answers at the frontiers of knowledge.
As our oceans warm due to climate change, sea levels are rising. It ought to be straightforward – as water gets warmer, it increases in volu...
CrowdScience listener Jeroen finds it hard to remember people's faces - and he wants to know why. He wonders if it's to do with getting olde...
CrowdScience listeners Dougie and Molly have been wondering what happens to animals when they die, and whether there are animals that hold r...
Salt can be found in almost every kitchen in the world. But how did this seemingly simple ingredient become the world's favourite flavour en...
Is the world sitting on a ticking time bomb? CrowdScience listener Christel recently watched a documentary about a volcanic eruption in 536...
Listener Bart in Australia sees invasive species in his area almost every day – rabbits, foxes, and cats. They were transplanted to Australi...
CrowdScience listener Po wants to know whether AI could one day replace all human jobs. And while he requests that CrowdScience continues to...
CrowdScience listener Doug has been experimenting with holding his wireless garage key to his chin. Why? Because he's testing a strange tric...
CrowdScience listener Kassy in India wants to know if there’s any science to support the practice of ‘manifesting’ – the idea that you can m...
CrowdScience listener Ndanusa in Ghana, is gazing up at the stars, and wondering. Big philosophical questions, like… what keeps our universe...
Australia’s Great Barrier Reef is one of the richest and most complex natural ecosystems on earth, and it’s home to over 600 species of cora...
On a recent kayaking trip, CrowdScience listener Lanier sliced through his right thumb, putting it out of action for a while. This made life...
Noise cancelling headphones filter out sound waves that we don’t want to hear. Listener Ahmed in Libya loves wearing his and, as he was list...
CrowdScience listener Griffith in Ghana, isn’t JUST a CrowdScience listener. He’s also a listener to our sister show on the World Service, U...
CrowdScience listener Namrata and presenter Chhavi Sachdev have something in common. They both get more tanned in the summer in the United S...
There’s something fishy going on in the Czech Republic, where CrowdScience listener Ian lives. He keeps tropical fish, and he’s noticed that...
Is silence blood-curdling or blissful? CrowdScience listener Ziqi finds it intolerable and thinks that there’s a good reason for it – silenc...
Crowdscience listener Ryosuke grew up in Japan, and spent his childhood summers catching cicadas in the park. For people in Japan, the sound...
CrowdScience listener Limbikani in Zambia is always being told he has his Dad’s laugh, so he set us the challenge of trying to find out whet...
In 2025, the crack team of intrepid presenters here on CrowdScience have been on some incredible adventures. They’ve wondered whether water...
When some people are wandering around in shorts and a t-shirt, others are wrapped up in warm coats and jumpers. How come our responses to co...
Smashing up guitars is a classic rock star activity, but how about drowning them? Seven-year-old listener Cornelius asked CrowdScience to fi...
Can we turn the world’s deserts green? CrowdScience listener Youcef is captivated by the idea of bringing water back to Earth’s driest lands...
When listener Sakura’s husband came home from his morning walk in Cambridgeshire, UK, he told her about a massive rainbow he’d seen. But whe...
Tears of joy, tears of sadness, tears of frustration or tears of pain - humans are thought to be the only animals that cry tears of emotion....
Tsunamis destroy buildings, habitats and danger to everything in its path on land. But how do they affect life under the water? That's what...
In your final moments, they say, you may walk down a tunnel of light. You might rise above your body, watching the scene below before passin...
For some they’re the stuff of nightmares, but many of us can’t get enough of horror films. For Halloween, CrowdScience investigates the scie...
We all know insects are important, but one CrowdScience listener worries that they don’t seem to have equal billing when it comes to human l...
How would you record a special moment? Maybe you could take a photograph, film a little video, or record some audio. We have lots of ways of...
Atoms are the building blocks of our world. Many have been around since right after the Big Bang created the universe nearly 14 billion year...
Listener Jude in Canada wants to know why some animals are black and white. Why do zebras risk being so stripy? Why do pandas have such dist...
Sometimes in science, when you try to answer one question it sparks even more questions. The CrowdScience inbox is a bulging example of that...
CrowdScience listener David is a bird whisperer. On his family farm in Guinea, he would mimic the call of the black-headed weaver. He could...
CrowdScience listener Kerry started thinking about his sentimental attachment to his possessions when he began sorting through an old trunk,...
Milk: drink a lot of it and we’ll grow big and tall with strong bones. That’s what many people are told as children, but just how true is th...
What will remain of us hundreds of millions of years from now? And how can we be so certain that we are the first technologically advanced s...
Camouflage isn't just for chameleons! Military forces around the world deck their soldiers out in those distinctive green and brown uniforms...
When listener Rob from Devon, UK, heard of a newly detected planet light years away, he was struck by the sheer scale the light must travel...
CrowdScience listener Rit, from Pune in India, is staring out of his window at the falling rain. It’s been pouring for four days now, and sh...
CrowdScience listener Jon started wondering how our teeth are created while he was in the dentist’s chair. It took his mind off the drilling...
The epic space story of a sci-fi dream that changed spaceflight forever. Told by the Nasa astronauts and team who made it happen. Our multi-...
What comes to mind when you imagine the future of humanity? Could a computer make your mind more efficient? Enhance your cognition? Or cure...
Your whole life is governed by spin. The rotation of our planet tells you when to wake up, and Earth’s orbit around the Sun is the reason wh...
Here's a conundrum that has captivated scientists: when Earth formed 4.5 billion years ago, our planet was essentially a ball of molten rock...
Listener Dickson Mukisa from Uganda has been gazing up at the stars. But he’s not making wishes. He wants to know whether we can harness the...
No one really cares that CrowdScience listener Sam has a younger brother, but they do care about his sister. In fact, they’re fascinated by...
Cycling is good for our health, good for the planet, and it can be an efficient way of moving around busy cities. But despite all the ration...
Was there ever a time when life on earth was peaceful? Free of violence? No predators, no prey, just... vibes? Or has nature always been 'Re...
In the dead of night at his home in Machinjiri, Malawi, CrowdScience listener John can hear a small, but persistent, hum. Whenever it’s quie...