The Naked Scientists Podcast

Why does sunlight make me sneeze? What causes air turbulence? Why do energy-saving lights take time to warm up? In this week's question and answer show we also investigate why microwaving a dishcloth causes it catch fire, whether mining could change the Earth's orbit and why streetlights shine with an orange glow. In the news, meanwhile, how electrical brain stimulation can make impossible problem...

This week we're exploring the future of nuclear energy, including meeting the makers of a new design of nuclear reactor that can consume the fuels that other plants can't burn. We also delve into ways to unclog pipes inside reactors without the risks of going inside. And where do you stand on the nuclear debate? Should we be exploring alternatives, or is there no alternative to a nuclear-future? W...

Immune-manipulating parasites, bacterial genomes married to disease processes and viruses that bounce off already-infected cells make for an infectious episode of the Naked Scientists this week. Also up for analysis, why the eyes vote no to long space journeys; the problem with prostate cancer prediction; why nanoparticles trigger bacteria to breed superbugs and the contagious question of which ca...

Smart sensors can open a window into the environment. In this week's Naked Scientists Podcast we find out how networks of sensors around Heathrow airport can study how planes alter the atmosphere, and how a similar network can monitor an Oxfordshire floodplain. Plus, we find out how the tools of a surgeon are helping to keep jet engines in flying form. In the news, we hear how gut bugs promote blo...

How can we extract energy from waste? In this week's Naked Scientists we explore the technology that turns muck into methane and consider the fertile issue of nutrient overload resulting from returning the finished products to farmland. And what about water? Why do we individually use ten times more water than we actually need, and what's the solution for a drought-stricken Britain? Plus, in the n...

What's the point of earwax? Does WiFi damage the brain? Can a mobile phone in a trouser pocket dent a man's fertility? In this week's science Q and A show we also brush up on how they get the stripes in toothpaste, discover whether dropped food follows the 5 second rule and shed light on why some forms of EM radiation more damaging than others. Plus, news of a new microscopic MRI machine for molec...

A new liquid crystal laser that can dial-up any wavelength of light you need, a laser-powered projector technology that turns any surface into a touch-screen, and a laser that fires salvoes of X-rays to make light work of unlocking the molecular fabric of matter are the focus of this week's laser-led show. We also meet HECToR, one of the world's fastest computers that just got a tenfold power boos...

Over two-thirds of the energy in the fuel you put into your car is wasted, most of it in the form of heat that exits along the exhaust pipe. The same is true of large-scale power stations, which are only 50% efficient at best. But now researchers are bringing 200 year old physics to bear against the problem by developing thermoelectric generators (TEGs) that can turn waste heat into useful electri...

Could diet foods be making you fatter? How do we learn to like the foods we eat? This week, we indulge in the science of appetite, diet and diabetes. We'll find out how our early experiences of food can alter our diets for life, and ask if low calorie alternatives to sweet and fatty foods can fool the brain into underestimating the energy content of the real thing. Also, how synthetic chemists are...

Has all the air in the world been breathed before? Are any viruses beneficial to health? Can naked farts transmit diseases? You set the agenda in this Naked Scientists Question and Answer show in which we also discover how Inuit cope without fruit and veg, whether muscles can become cancerous and how long before we can teleport to work. Plus, reproducing Alzheimer's disease in a dish, self-distill...

Could a ray of sunshine hold the key to preventing MS, diabetes and even bowel cancer? Vitamin D - made naturally in skin exposed to strong sunlight - appears to reduce the risk of developing these, and a rash of other diseases. We examine the evidence to find out why as well as hearing how seaweed looks set to ignite a biofuel boom in the future, why a good night's sleep might make traumatic memo...

Where do you stand on becoming part person, part machine? This week we hook up with three pioneers in the field of cybernetics including walking cyborg Kevin Warwick, who volunteered his own nervous system to test out a new way to connect up with the machine world, Markus Groppe, who is trialling an implantable chip to restore vision to the blind, and Andrew Schwartz who's developing neural interf...

Do stars form outside galaxies? What causes ringing in the ears? How fast does force propagate? Why do spectacles still work when worn backwards? Is the expanding universe tearing galaxies apart? And is any new water being created on Earth? Plus, news of the new satellite surveying the moon, the scientific way to sound out a Stradivarius and how a vaccine based on chimp viruses can protect against...

Are candles environmentally unfriendly? Why does tinfoil touching a filling set my teeth on edge? What colour does a dead chameleon go? Does antiperspirant deodorant make you sweat more elsewhere? Could we tether the moon on a string to stop it escaping? And why is the fine spray in the shower so cold? To find out, join Chris, Dave, Dominic and Helen for this festive Christmas edition of the Naked...

Can new technologies probe human thoughts and feelings without us even realising? This week we talk to a researcher who's using mobile phones to tap into peoples' emotions to provide new insights into human behaviour and even spot the triggers that might be encouraging someone to smoke. Plus, how data mining and computer simulations can identify the patterns of behaviour that predate disasters so...

How do archaeologists locate, conserve and recover historical treasures from old shipwrecks? What is erosion revealing on the foreshores of the River Thames? And how do you weld up an oil or gas pipeline one kilometre underwater? This week we're looking at the "appliance of science" beneath the waves as well as hearing how the ageing Voyager space probes have discovered the births of new stars in...

This week, how immune cells can be caught on camera as they exit blood vessels, a new design of lensless microscope and one that sees cells in 3D, how sound and heat can be used to find faults in materials and how something as small as an atom can be seen under an electron microscope. Plus, news that nerve transplants can correct metabolic disorders, the World's first fishhook, bionic contact lens...

Is modern technology changing your brain? How fast does flu fly? Can you build a lightsaber? Your questions are the stars on the Naked Scientists this week, as we discuss the implications of faster-than-light travel, the risks of skydiving through a thundercloud, and ask if dogs can sniff out cancer. Plus, we find out how the brain detects different diets, what happens when black holes collide, an...

In a show not to be sneezed at, we look at the evidence that coughs and sneezes are linked to heart attacks. We also probe the Flu Survey, a new citizen science initiative to gather data on the incidence of influenza-like illnesses in the European population; we talk to the company who are mass producing flu vaccines in tobacco plants and catch up with the Columbia University scientific adviser on...

This week Kat Arney joins us live from the National Cancer Research Institute's conference in Liverpool. We find out how mistakes in cell signalling can cause cancers and why DNA repair pathways offer targets to treat tumours. Also, we explore the latest developments in cancer imaging, including new techniques that allow us to track chemical reactions happening inside the body. In the news, why yo...

This week's podcast is live from the British Society for Gene Therapy (BSGT) conference in Brighton, UK. Some of the world's top gene and stem cell therapists explain how we can manipulate genes to treat a variety of disorders, from cystic fibrosis and haemophilia to cancer and blindness. We hear what life is like as a haemophiliac and answer your questions, including whether gene therapy can alte...

Can moonlight and a magnifying glass be used to start a fire? Why do bananas go brown and does it happen faster in the fridge or the fruitbowl? Why are ice and snow slippery? And how does flyspray work? Alongside your quality science questions in this week's Question and Answer science phone-in, we also hear how how space scientists have spotted a whole planet's worth of water in a nearby system,...

This week, Plant Pests and Plant Pathology - we find out what happens when plants get ill, how to understand and prevent the spread of plant disease, and how they can call up an insect army to defend them if they're attacked. We also find out why some horse chestnut trees are going brown before their time, and meet the pesky critter responsible! Plus, a new technique to cleanly edit out and correc...

This week, we're investigating alternatives to petrol. We'll board a biofuel powered bus to meet the plant scientists who are using algae to make biodiesel. We'll find out how to turn household waste into hydrogen, and meet the brains behind Bristol's first hydrogen powered passenger boat! Plus, the brain basis of boundless optimism, why a bacteria-busting chemical keeps injured arteries open, and...

Could a Siphon be used in orbit? Why do leaves change colour in Autumn? How is immunity passed from mother to baby through breastfeeding? Why do earthquakes happen away from plate boundaries? How do microwaves heat up food? We storm through your questions this week as well finding out how Twitter can be used to monitor moods around the world, how carbon dioxide can be converted back into a fuel, h...