Ask the Naked Scientists

Can a new stomach be grown in a dish? Are Ebola survivors immune from future infection? Why do injuries seem to hurt more later? Are there homosexual dolphins? How do muscles make energy? How do ants home in on food? Can dogs judge human character? Like this podcast? Please help us by supporting the Naked Scientists

Why do people talk to themselves? Can cats cut your risk of a heart attack? Does salt help water boil quicker? Do women have an Adam's Apple? Plus, an update on Ebola and a rapid paper-based test for the virus... Like this podcast? Please help us by supporting the Naked Scientists

Why do I sneeze in bright light? Can the radio control my dreams? Like this podcast? Please help us by supporting the Naked Scientists

Why did dinosaurs grow so large? Do flies have blood? Can chemotherapy get into the brain? Why do scorpions glow in UV light? Did we interbreed with Neanderthals? Plus, news of how your sense of smell can indicate how long you have left to live... Like this podcast? Please help us by supporting the Naked Scientists

How is sea-level defined? What makes some people sleepwalk? How are barometers calibrated? What is an acquired taste? How much of the body is water? Do we really use only 10% of our brain? Why does red wine stain your lips? Why to I talk in my sleep? What happens if you drink petrol? Like this podcast? Please help us by supporting the Naked Scientists

How do people catch ebola? Why do brothers and sisters look different if they have the same parents? Can we mine the moon for fuel? Why should you not re-freeze meat? What causes birth marks? What is a curve of pursuit? Can you be born circumcised? Dr Chris answers more of your questions, on Talk Radio 702... Like this podcast? Please help us by supporting the Naked Scientists

Can we rear people in a germ-free environment? Can you be born with only one kidney? Why does spaghetti always break into 3 pieces? What exactly is temperature? When you add more water to the bath and then pull the plug - what water goes down the drain first, the new or the old? Why do birds live longer than their size would suggest? Like this podcast? Please help us by supporting the Naked Scient...

Why does running water make you need the loo? Like this podcast? Please help us by supporting the Naked Scientists

Can you get sunburnt through a glass window? What are white holes? If everything is made from atoms, and atoms are largely empty space why can't we phase through walls? Can chlorophyll help body odour? What causes ringing in your ears? Can you train a child to be ambidextrous? Plus, an update on Ebola. Like this podcast? Please help us by supporting the Naked Scientists

If you fall asleep with the radio playing what effect would this have on the brain? How do marine mammals stay hydrated? If you fall off a certain height do you die before you hit the ground? How come children spit all the time? How accurate are dinosaur reconstructions? Like this podcast? Please help us by supporting the Naked Scientists

What's causing the ebola outbreak in northwest Africa? Is our sun unique? Why did we make clocks tick the way they do? Does altitude affect my blood pressure? Would the passengers remain conscious aboard an aircraft hit by a missile? Where does the iron on Earth come from? Are maps accurate? Like this podcast? Please help us by supporting the Naked Scientists

Should my air-conditioning be fresh or recycled air? Is the International Space Station in geostationary orbit? What causes plane vapour trails? Is it alright to drink water on an empty stomach? Why do we have blood groups? Why do we boil our food? Why do some wines give you a worse headache? Plus, why beef is off the menu for a sustainable world... Like this podcast? Please help us by supporting...

Are there extra types of water? Do plants give off carbon dioxide at night? Why does huddling together keep you warm? What is the origin of belly-button fluff? What causes nightmares? And how does the magnetic field around Earth affect us? Plus, news of how dental plaque can show us what our ancestors ate... Like this podcast? Please help us by supporting the Naked Scientists

How does a gastric bypass work? How do spaceships land safely back on earth? What makes humans so successful? Are new species still appearing? Is the sea getting saltier? Plus, news of biomarkers for Alzheimer's Disease... Like this podcast? Please help us by supporting the Naked Scientists

How do e-cigarettes work? Could a blind chameleon still change colour? Do sightless people pick up on things most of us miss? Can the hydrogen be extracted from water? How are hurricanes named? How do birds navigate? How do vaccinations against bacteria and viruses work? Join Dr Chris for the answers to South Africa's top science questions, as well as news of a solar power breakthrough based on a...

Can people with autism catch yawns? Why isn't the Sun cooling down? What is the theory of spontaneous human combustion? Why did Luis Suarez bite someone? Should I close the fridge door while adding milk to my tea? Like this podcast? Please help us by supporting the Naked Scientists

Does learning a musical instrument boost brain power? Are there limits to what the human body can repair? How does my brain know how to whistle in tune? Can newborns recognise their grandmothers' voices? Is there life elsewhere in the Universe? Is there any connection between autism and vaccinations? How do rocks erode? And the cure for procrastination? That's in next week's show... Like this podc...

Are mouth bugs nastier than bowel bugs? How would wiping out mosquitoes affect the food-web? What is an itch? Are anaesthetics a risk factor for blood clots? What are trans-fats and invert sugars? Can parasites manipulate our behaviour? Are there any benefits of yawning? Plus, news of the genetically-modified mosquito that might help to eradicate malaria... Like this podcast? Please help us by sup...

Are mothballs poisonous? How do chameleons change colour? Where do seedless varieties of fruit come from? What is ash? How can we use DNA to trace ancestry? Why do people open their mouths when they apply mascara? What causes a stammer? Like this podcast? Please help us by supporting the Naked Scientists

What does coffee do to my heart rate? Has the earth changed size since its formation? Why are hailstones round? How do you avoid getting seasick? Are energy drinks bad for you? How do antidepressants work? Plus, how smells give away gender. Like this podcast? Please help us by supporting the Naked Scientists

What sort of star is the Sun? Can damage done by Multiple Sclerosis be repaired? Why does an acetylene torch need oxygen? How are calories in food calculated? What gives water its colour? Is drinking distilled water bad for you? What is sleep paralysis? Can liquids be compressed? Plus, how smells give away gender. Like this podcast? Please help us by supporting the Naked Scientists

Are flies getting harder to swat these days? Why does more food in the microwave take longer to cook? Should penicillin-allergic people avoid blue cheese? Why are clouds white? What causes baldness? Why aren't marine fish more salty? Like this podcast? Please help us by supporting the Naked Scientists

The building blocks of life, what is a virus? Why don't whales get the bends? How does a 3D printer work? How do 93 and 95 octane fuels differ? Why is ricin deadly by castor oil is safe? Would HIV respond to an induced coma? Why do you cry when you yawn? Join Dr Chris for the answers to more burning science questions... Like this podcast? Please help us by supporting the Naked Scientists

How can cochlear implants deliver gene therapy? Are you better off circumcised? What is the biggest discovery of the last 20 years? Can planets exist without a parent star to orbit? Does lighting a match mask a bad smell? Are there devices to help achieve perfect pitch? And do i get more petrol for my money when it is cold? Like this podcast? Please help us by supporting the Naked Scientists

The Naked Scientists appear in the flesh at Primedia Place, home of 702, to answer questions from the live audience... Like this podcast? Please help us by supporting the Naked Scientists