Ask the Naked Scientists

What's the difference between mist and fog? Would 1 kilometre on our orbit make the difference between life and death on Earth? How do washing powders get clothes clean? How does sunlight and seawater lighten hair? How deafening was the Big Bang? Will rainwater wash clothes better than tapwater? Why does water issuing from a tap when you first turn it on, look white with tiny bubbles? Why doesn't Super Glue go hard in the tube? Are gravitational waves audible? Like this podcast? Please help us by supporting the Naked Scientists

What is the difference between 93 and 95 octane petrol? Why is the sea salty? What is at the end of the universe? How can we cure epilepsy? Like this podcast? Please help us by supporting the Naked Scientists

Could we slow down light to see backwards in time? Why does the moon appear not to rotate? Why don't some melting icebergs lead to sea level rise? What are the problems with Newtonian physics? Do acupuncture and fish therapy work? Are supplements a scam? How did our solar system form? Does light therapy work? Lester Kiewit and Dr Chris have the answers... Like this podcast? Please help us by supporting the Naked Scientists

Did the Earth just have its shortest day ever? Should we ever stop feeling pain? Why are different areas of hair on our body different colours? Is your car's speedometer correct? Are orcas evil? Why don't woodpeckers get brain damage? How do pigeons navigate? Lester Kiewit and Dr Chris have the answers... Like this podcast? Please help us by supporting the Naked Scientists

How do we know that white light contains every colour? Why does time only move forward? Why aren't birds electrocuted by power lines? How do aeroplanes manage to stay airbourne? Why can't different species reproduce? How do X-Rays work? Why do antibiotics work against bacteria, but not viruses? Lester Kiewit and Dr Chris have the answers... Like this podcast? Please help us by supporting the Naked Scientists

Can the James Webb telescope see the origins of the Universe? Does freezing your jeans remove stains and preserve the colour? What are the effects of tumours in the adrenal glands? How many people have ever lived on Earth? Does a drink stop a cramp? Will the James Webb Telescope unlock new physics for us? Why is AM frequency affected by power lines? Lester Kiewit and Dr Chris have the answers... Like this podcast? Please help us by supporting the Naked Scientists

What's better to injest after antibiotics treatment, yoghurt or probiotics? What makes milk and snow so white? Why does being exposed to cold water make one breathe so heavily? Is time really a human construct? This and more are the subject of Lester and Chris' weekly science QnA session... Like this podcast? Please help us by supporting the Naked Scientists

Why chainsaw's blunt over time, planet rotation, Star Trek's on the money with scientific accuracy, mathematical conundrums, sneezing in your sleep, the kinetic energy of a sneeze and our perception of flavour. Lester and Dr Chris have the answers... Like this podcast? Please help us by supporting the Naked Scientists

Consumption of energy in the brain; the role of my adam's apple; seed anatomy; why there are so many planets; body components that suck oxygen from the air; NASA predicts the number of stars in our universe; why do flowers bloom in spring; measuring the milky way; the chemical properties of bromine; pursuing the origns of life; if the moon isn't cheese, what is it made of? Dr Chris Smith joins 567 Cape Talk's Lester Kiewit to talk the answers through... Like this podcast? Please help us by supporting the Naked Scientists

Soap on the bathroom mirror with a hot shower running; sedatives acting unusually; coffee reduces tiredness but also provides a lick of energy; does a glass of sherry warm you up on a cold night; how do you contract shingles; asian flush; water density experiment for you to try at home; is the conflict in Ukraine speeding up climate change. Dr Chris Smith joins 567 Cape Talk's Lester Kiewit to talk the answers through... Like this podcast? Please help us by supporting the Naked Scientists