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Ask The Naked ScientistsThe Naked Scientists: Science Radio & Science Podcasts |
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What's a light-year, why is the earliest dawn not on the solstice, is the Sun hotter in South Africa, what causes neuropathy, can batteries short out in my pocket, is there a non-surgical solution to a squeaky voice, can my cell phone unlock my car and why does tapping a cup of cocoa make the pitch go up? Join Dr Chris for this week's festive selection of scientific conundra, on Talk Radio 702...
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How did a lightning storm spark a glowing ball above a roof, do atmospheric oxygen levels dip in winter, does anyone naturally not have fingerprints, are humans still evolving, and what's the story behind Lorenzo's Oil? Join Dr Chris for an intellectual work out with this week's round up of brain-stretching science...
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What can hydrogen reveal about the structure of the early Universe and what causes Alzheimer's Disease; is the moon upside down when seen from south of the equator, what causes Autism and can it be treated and why do I only need 4 hours sleep? Join Dr Chris in this discusion on this week's Ask the Naked Scientists...
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Kangaroo mothercare, why we all look different, what's the capacity of the human brain and why do some songs get stuck in your head are all up for analysis this week, and Dr Chris also has news of how worms can treat inflammatory bowel diseases, a memory-erasing treatment for chronic pain, and bacteria that thrive on arsenic...
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What's more accurate, vehicle speed according to a GPS unit, or the speedometer? Also, what causes the Earth's magnetic field to flip, why do people sleepwalk and can the shrunken state of an accidentally boil-washed jersey be reversed? Join Dr Chris as he pits his wits against this week's science question selection and also discusses news of the discovery of sugar transporters in plants and a way to age a person using just a drop of blood...
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How do space travellers navigate, can you swallow in microgravity, does apple cider vinegar help with weight loss, is there a "gay" gene, why did a game of football come to a frosty conclusion and why do some plant pigments change colour in water? Join Dr Chris for another fact-soaked foray into the world of science...
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This week, how Tetris could hold the key to blocking the bad memories and flashbacks behind post traumatic stress disorder and how an old drug could provide a new answer to neuroprotection from Parkinson's Disease. Also, why dark skin is more prone to scarring, is diesel a worse polluter than petrol, and does soap just detach bacteria from the skin, or kill them? Join Dr Chris on Talk Radio 702 to find out...
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Where do accents come from, can glass be magnetised, what's the point of males and females and can people get locked together during sex? Join Dr Chris to find out and to hear about a new way to combat cancer, a novel way to block brain damage done by a stroke and how scientistsw are boosting mathematical ability, with a dose of electricity...
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Join Dr Chris to discover why a work out makes you whiffy, how grass can grow in concrete, what diseases birds can give to humans, as well as why humans, but not other animals, need a balanced diet? Plus, news of improved prospects for pancreatic cancer, researchers work out how the brain directs its attention, and evidence that Earth-sized planets might orbit a quarter of Sun-sized stars...
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What stops water moving through a tiny hole, are ground up tablets safe to swallow, what are freckles, how fast can a human heart beat, what happens when a cataract is removed, where do fat flies come from and how does the moon influence the Earth? Join Dr Chris as he pits his wits against this week's round up of science questions from South Africa...
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This week Dr Chris discusses how volcanoes can cut global warming, the evidence for genes linked to race, whether ambidexterity is real, the cause of crop circles, news of a new vaccine for tuberculosis (TB) and the tale of a comet that turned into an asteroid...
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Are fat cells all made equal, why women glow while men perspire, the science of electromagnetic induction, what is emphysema, how are drug doses determined, is the Earth gaining weight and where does belly button fluff come from all go under the microscope in this week's Ask! the Naked Scientists from Talk Radio 702...
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Where does the waste from an aeroplane toilet go? And could you ever really get stuck to one when pressing the flush? Do we have bigger brains than 500 years ago? Why are planets spherical? We tackle all of these questions this week, as well as finding out that researchers have created an artificial nose even more sensitive than a dog's. Plus we'll discover why onions make your eyes water...
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How do dolphins and other marine animals hydrate themselves? Can we use nanotechnology to fight disease? How does a radio-controlled clock work? We take on this variety of questions as well as find out why tea stains our cups, whether volcanic activity hollows out the earths core and why ice sticks to your tongue. Plus, we investigate if any large land animals can survive without oxygen!
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How does a mobile phone mast work? What affect does living in space have on the human body? Could tractor beams become a reality? We take on these space age questions in this week's show as well as reveal the land area of Earth, why people in the Southern Hemisphere don't walk on their heads, why hair looks darker when wet and why alcohol makes you feel happy. Plus, we investigate what would happen if we drilled to the centre of the Earth!
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Are we at risk when we use public toilets? What can we catch from kissing strangers? Why is it safer to eat cooked rather than rare meat? We take on these risk averse questions as well as find out how the sun burns, why children shouldn't drink coffee, the direction our blood flows around our body and how much ruminent animals and permafrost contribute to our greenhouse gases. Plus, we investigate whether it's more efficient to run our cars on a half or full tank of gas!
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Why do pigeons nod their heads? How does food become body fat? What can you do with a ramjet? We take on these questions as well as discover how megapixels are formed, whether bees go into their hives at night and why we use CO2 in fizzy drinks. Plus, we sniff out why cows produce methane!
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On Ask the Naked Scientists this week, we find out how cacti can survive with very little water, and why they are so well endowed with spines! We answer your questions on asteroids, the size of the universe and the correct angle to leave the Earth. Plus, we test Dave's knowledge of anti-ageing cosmetics!
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How did we measure geographic distances before GPS? And how do GPS satellites do it now? Would floating bridges help in Pakistan? We'll tackle all of these questions this week, as well as finding out if ice would melt in space and if all the alcohol evaporates if you use it in cooking. Plus, whether explosions in space just keep going...
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How small is a proton? What is a photon? And how do colour-changing toys work? We'll find out the answers to all these questions this week, plus find out how new stars are born, how painkillers work and the effects of salt on our bodies!
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How do lasers work? Could lasers be used to treat cataracts and blindness as well as our eyesight? Why is a hydrogen atom bigger than a helium one? Why is there no oxygen on other planets? We take on these questions in this week's show as well as find out whether South American Indians can really shrink heads, whether microwaves could be altered to cool food down, if women will survive longer than men on earth and investigate if it's possible to make artificial gravity out in space!
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Why does time seem to go by faster as we get older? What do IQ tests really measure? How do probiotic yoghurts work? We get the answers to all these on this week's show, as well as finding out why hair goes lighter in the sun and how 3D televisions work. Plus, is there such a thing as a 'good' virus?
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Why does sugar look so different when you heat it up? How much CO2 is there in all the world's bottles of Cola? And which way is it to the Centre of the Universe? We'll tackle all these questions this week, as well as discovering what causes thunderstorms, and whether aeroplanes would work in space. Plus, does wrapping your fish and chips in newspaper make it poisonous?
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Do we really need 8 glasses of water a day? How does a jet engine work? Where does earwax come from? Why are some apes vegetarian when we're not? We find out the answers to all these questions, as well as discover what thunderflies are, investigate if we're any closer to a malaria vaccine and discuss why bird feathers are so colourful. Plus, we find out about a newly discovered chemical that promotes cell survival in our brains!
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Why are moths attracted to light? How do red-leaved plants photosynthesise? Why don't hayfever sufferers become tolerant to pollen? We take on these questions in this week's show as well as discover if our planet changes its weight, how our brains store information and whether the Sun has any gravity. Plus, we discuss if man will ever land on Mars!
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How does vinegar 'cook' an egg? How does Google work? Are the colours we see really real? We'll get the answers to all of these, plus explore how giant tortoises made it to the Galapogos, and how wiping out the human population would alter the atmosphere!
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How are crisp flavours created? What makes flies so resilient? Why do some women get facial hair with age? We take on this variety of questions in this week's show as well as find out how our universe began, if Aspergers syndrome is hereditary and how methane clathrates could be used to store gases. Plus, we discover how scientists are creating lungs in the lab!
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Is microwaved water safe? Why does a mirage form? What causes that shimmer on a hot road? We tackle all of these questions this week, as well as look at how anti-dandruff shampoo works, how ships stay upright and whether humans are the only species that cry. We also find out if your laptop would survive a dunking in de-ionised water!
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How did HIV originate? Why does anaemia occur more often in Africa? Do growing pains exist? We take on these infectious questions as well as find out how limescale remover works, how rainbows form and whether all objects expand in heat. Plus, we investigate if humans can get stronger under stress and reveal how much water we should drink for a healthy body.
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How do Tornadoes form? What's a daisy cutter bomb? Why do we get electric shocks when leaving our cars? We take on these questions as well as find out why Jelly freezes in the fridge, why humans can't pick up radiowaves and how far away the moon is. We also investigate when a scientific theory becomes a fact!
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Does our sense of taste change with age? How are horrid and pleasant smells decided by our brains? Is it harder to urinate when you're older? We tackle these time-sensitive questions in this week's show as well as find out how de-caffeinated coffee is made, whether caffeine is bad for us and how we acquire the bacteria that live naturally inside us. Plus, we investigate whether love can rule our brains!
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Why can't we tickle ourselves? Is deafness down to our genes? Can diabetes cause Eczema? How does deodorant prevent body odour? We take on these questions in this week's show as well as reveal if botox can be used as a medicine, why some people don't feel pain and whether it's possible to wake up with a new accent. Plus we investigate if bacteria could be used to clean the oil spill in the gulf of Mexico!
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Ask the Naked Scientists, South Africa! This week we're adding a new member to the Ask! family with a new show on South Africa's flagship station TalkRadio 702. We look at man-boobs, hair cells, relativity at work in rugby, the right way round for your headphones, the getting-cold-causes-colds myth, excito-toxicity, how the immune system works, why asparagus makes urine smell and the lifespan of a fly. Don't know the answer? Then why not Ask the Naked Scientists...
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What effects can underground nuclear explosions have on our land? How do antibacterial cleaners work? Could bacteria be used to clean up our environment from pollutants? We take on these question in this week's show as well as find out why the colour blue is so hard to see at night, how grass can survive when covered with snow, whether tanks could be made with armoured glass and how data can be saved on non-magnetic disks. Plus, we find out how scientists are developing flexible touch screens!
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Do earthquakes shift the earths axis? If the population of China jumped at once would it cause an earthquake? How much lava is inside the earth? Would more volcanic eruptions lead to an ice age? We tackle these questions as well as find out what makes stainless steel stainless, why it is colder further out in space, and why wet towels whip harder than dry ones. Plus we investigate how ice found on asteroids could support the theory for life in outer space.
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Could a comet shield the earth from the sun? How do planets form around stars? Why are planets spherical? What's the temperature in space? We tackle these astronomical questions in this weeks show as well as reveal why there isn't a cure for the common cold, why 3D glasses make some of us feel dizzy and if volcanic ash can disrupt space travel. Plus, we investigate what the Hubble Telescope sees in space!
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Why are some Volcanic Eruptions stronger than others? Why can't aeroplanes fly around the ash in the sky? Is our ozone layer still a concern? Why will sea levels rise if the ice caps melt? We take on these explosive questions in this week's show as well as find out if dogs can communicate, how boats sail into the wind, how outdoor infra-red heaters work and why clingfilm expands over food in the microwave. We also investigate is silverfish are related to dinosaurs and where water goes when it evaporates!
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Why does it feel hotter when the sun is out? Why can we see clouds at night? Is the sky always grey when it rains? We tackle these question on this week's show as well as find out if a magnet could replace the wires in a pendulum, why some plugs only have 2 prongs, how it is possible to go blind only temporarily and we reveal how our blood clots. Plus, we investigate the science behind near-death experiences!
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Do cats have a sixth sense? How do dogs moult? Why are some hairs longer than others? Why do women get hot flushes? We tackle these questions on this weeks show as well as find out why we form tears, how animals navigate and why our voice changes when we hold our nose? Plus, we investigate if toads can detect earthquakes!
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Why do boomerangs return? How do painkillers know where to go? Are some painkillers faster than others? Why do men have nipples? We take on these questions in this week's show as well as find out why rainbows form arcs, what Menieres disease is, how sea breezes form and why we don't sing with accents. We also investigate the difference between X-rays, MRIs and other medical scans!!
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How does lightning strike? Should we worry about radiation from mobile phone masts? Do our TV sets give off any radiation? Why do we see the Northern Lights? We tackle these questions in this weeks show as well as reveal how a gyroscope works, why some batteries last longer than others and if the earths core uses oil as a coolant. Plus, we compare the energy consumption of electric and internal combustion engine cars!
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Could the Earth cope without the Moon, how do safety matches work, what causes hiccups, why don't frosts form undercover, should NASA put people on an asteroid, why do nails grow faster on holiday, and what was here before the Big Bang? Join Dr Chris as he embarks on a brain-stretching scientific tour of the Cosmos for this week's Ask the Naked Scientists!
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How does fuel burn in spaceships without oxygen? Why do we see sun rays from behind clouds? Why is there often a red glow in the night sky? We take on your cosmic questions in this week's show as well as reveal how radios pick up aircraft transmissions, why solar panels work better when facing south and we investigate if the recent earthquakes have knocked the earth off its Axis!
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Why is Jupiter round and how does it hold onto its gas, how does skin thickness vary around the body, why does milk soothe the effects of chilli, how do brain sizes vary amongst animals, what makes a person blush, why don't we deafen ourselves when we shout and what makes bottoms attractive? Join Dr Chris as he pits his wits against this week's crop of questions...
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How do meat-tenderisers make meat more succulent, how do they get the corks into Champagne bottles, do explosions travel in space, why have golf balls got dimples, how do holograms work and what does light weigh? Find out with Dave Ansell in this week's fact-packed Ask! The Naked Scientists...
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How do we fall in love? What is our universe Expanding into? Will our universe ever be sucked back inwards? We take on these cosmic questions in this week's show as well as find out how dogs tell the time, if cracking our knuckles causes arthritis and why vegetables are less crisp once frozen. We also investigate whether the forces created by volcanes could be harnessed for energy!
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Why does the earth spin? Is the moon moving farther away from earth? What are the odds of winning the lottery twice in a row and of getting the same numbers twice? We take on these questions in this week's podcast as well as reveal the difference between blu-ray and DVD's, what will happen when the earth's magnetic poles flip, why certain materials are transparent, and if water changes composition when boiled. Plus, we investigate the potential for life in outer space.
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Does being hot under the collar ever lead to spontaneous combustion? Will we ever get smellovision? Does being ill make you smarter? We take on these questions in this week's show as well as reveal if animals and humans react to drugs in the same way, whether milk is what makes mucus in our bodies and if microwaves are as good at heating water as your kettle!
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Why do buses get steamy, how do ships withstand super-waves, what's really invovled in balancing on a bike, how come Hawaii's on a hot-spot and do fluorescent tubes flash beneath power lines? Join Dr Dave as he pits his wits against your scientific conundra...
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How long to bones take to heal? Are healed bones stronger than they were before? How do glow worms glow? We tackle these bright questions on this week's show as well as reveal what a headache is, how to cure a hangover, the strength of atomic bombs and how trees and coral can tell us about past climates!
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At what temperature does sea water freeze? Why do aeroplanes not freeze when up in the cold air? Why can't we use sand on icy roads? We tackle these chilling questions on this week's show as well as reveal if parachutes could slow down a space ship, whether we can see stars from the moon, if smoke stacks can be harvested for energy and if wood vapourises before it burns!
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Is goose fat bad for us? What food ingredients are healthy? Is soy healthier than meat? What is cellulitis? We tackle these questions to kick off our healthy eating regimes for 2010. We also explore the depths of outer space to reveal how far away our planets are, how long a rocket would take to reach Neptune and whether there are planets beyond our own solar system. Plus, we calculate how long it would have taken Santa to deliver presents to everyone!
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