On Ask! the Naked Scientist, Can you keep sparkling water fizzy for longer? Are magnesium tablets good for us? Why do we crave certain foods? How do breathalysers work? Like this podcast? Please help us by supporting the Naked Scientists

Is everywhere at the centre of the universe? How long do sweeteners stay in the digestive system, and what are the best alternatives? Can one black hole swallow another? Does Vitamin C help you fight flu? Why is science so hard to reproduce? Which animal only lives for one day? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists

Dr Chris answers science questions from listeners to TalkRadio 702, including; How does one improve short term memory, especially following a brain injury? Can retinal microchip implants cure blindess? What are the health impacts of artificial sweeteners? Like this podcast? Please help us by supporting the Naked Scientists

Dr Chris answers the usual spectrum of science questions from listeners to CapeTalk, including; are sweeteners bad for our cardiovascular health? If a mother has hypoglycemia while pregnant, what happens to the baby? Why did I have cravings during my wife's pregnancy? How does science track dangerous asteroids headed for Earth? Like this podcast? Please help us by supporting the Naked Scientists

Do atoms carry memory of information? What happens when dopamine circuits are interrupted? Why might you hiccup when you shave? Why do both kidneys fail when they're separate? Could a falling bullet injure you? Is it important to be de-wormed? Dr Chris Smith and Relebogile Mabotja have all the answers... Like this podcast? Please help us by supporting the Naked Scientists

In this episode of Ask! Dr Chris tells us what causes humiditiy in the air. Why are carbonated drinks bad for your teeth? Does the Naked Scientist know more than AI? Why does hair on our heads grow faster than on other parts of our bodies? Does Earth's magnetic field affect satellite transmissions? Like this podcast? Please help us by supporting the Naked Scientists

Dr Chris answers more listener questions, including: How do sunflowers follow the sun? How does the body determine when you're passing wind or something more solid? Why are mosquitos attracted to some people more than others? Why are some people more intelligent than others? Why are humans the only species with advanced intelligence? How intelligent is an octopus? Like this podcast? Please help us by supporting the Naked Scientists

How can you use sticks to calculate the circumference of the Earth? Can exfoliators remove your fingerprints? How do plants know which way is up? What dictates the pattern of a cat's stripes? What are hiccups? Can mosquitoes see you? Dr Chris Smith and Dan Corder have all the answers... Like this podcast? Please help us by supporting the Naked Scientists

Why do ants drown themselves? Could we power cars with electrolytes? What causes ulcers? Do metal wrist rings actually reduce pain? Should you take probiotics on an ongoing basis? What are duodenal ulcers? Can brain tumours cause diabetes? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists

Should you try to break bad habits? How do you stop a 'wandering' itch? Does climate change affect rainfall? Will you be tired if you dream of being awake? How do you get skin tags, and should you remove them? Why can some birds mimic humans, and some cannot? Why do you have nightmares during sleep apnea? Do offshore wind farms impact marine life? Who don't you look exactly like your relatives? How can you find a black hole if it doesn't emit light? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists