This week, why teenagers can feel moody, what causes restless leg syndrome, fidgeting and obesity, Covid-19 genetic risk factors, whether potatoes can prevent night cramps and arthritis, and the effects of Epsom salts. Join Dr Chris Smith and 567 CapeTalk's Kieno Kammies for this week's crop of questions and answers... Like this podcast? Please help us by supporting the Naked Scientists

What's the best way to avoid mosquito bites, and a suggestion that tomatoes ward the insects off. Also, why cookers heat some parts of pans better than others, the mind-over-bladder effect when you really need to go, why generic drugs are no different to named brands, why oil makes a rainbow effect on water, if a previously transplanted kidney could be re-used elsewhere, and the toxicity of ozone. Join Dr Chris Smith and 567 CapeTalk's Koketso Sachane for the answers... Like this podcast? Please help us by supporting the Naked Scientists

Vitamin D for coronavirus? Narcissism and the brain. Why use big dogs as sniffer dogs? Understanding conversations in noisy places, and why that gets harder as we age. Why does my hand itch before I receive money? Is the new coronavirus linked to type I diabetes in children? And attaching significance to coincidence! Join Dr Chris on 567 CapeTalk for all the answers... Like this podcast? Please help us by supporting the Naked Scientists

Can omnivores switch their diets to survive on whatever is available? Would a fat person last longer in a famine? How does serology help in the management of Covid-19? Could we use GM technology to develop a healthy form of tobacco? How and why do chameleons change colour? Why does ice stick to your skin? Why does a shop-bought chicken have tender meat and softer bones? Join Dr Chris Smith and Talk Radio 702's Azania Mossaka for the answers... Like this podcast? Please help us by supporting the Naked Scientists

The virtual reality system for visualising molecules, where Covid-19 came from, what would a brain transplanted individual experience, where did all the dust go when Beirut blew up recently, and why is smoking addictive? Join Dr Chris Smith and Talk Radio 702's Azania Mossaka as they delve into the answers... Like this podcast? Please help us by supporting the Naked Scientists

How a tiny spider can spin so much silk, how the moon's cycle affects human behaviour, the effect of body weight on bone mass, the reason people have consciences, and the way to become a scientist all get discussed this week. Join Dr Chris Smith and Kieno Kammies for the answers... Like this podcast? Please help us by supporting the Naked Scientists

Hyenas everywhere in the Kruger, but why so many? How does the human skeleton respond to changing body weight? Why remove and dump a whale carcass when it would rot down naturally? How long does the Covid-19 coronavirus remain viable in the body? Why is the sky blue? And is there a probiotic answer to body odour? Join Dr Chris Smith and Talk Radio 702's Azania Mosaka to find out the answers... Like this podcast? Please help us by supporting the Naked Scientists

Donald Trump diagnosed with Covid-19, SNP MP Margaret Ferrier takes two trains despite coronavirus infection, and the answers to why toddlers have potbellies? Can free-divers get the bends? How does sunscreen work? What's actually inside a black hole? And why do we itch, and what's the point? Join Dr Chris Smith and Kieno Kammies from 567 CapeTalk as they shoot the scientific breeze... Like this podcast? Please help us by supporting the Naked Scientists

Would a baby exposed to 5 languages from birth learn all of them? Toilet bleach: what's best, thick or thin? Are new varieties of fruits equally good for you? What's the proof for absolute zero? How are radio and TV audiences measured? What causes high pitched sounds in the ear that appear to come from nowhere? Join Chris Smith and Kieno Kammies for the answers... Like this podcast? Please help us by supporting the Naked Scientists

How do different tasks recruit different parts of the brain? What's the story of potential life on Venus? How long to boil the perfect egg? What's homocysteine and how much is a safe level in the blood? How does alcohol in hand sanitiser work? What's the most intelligent animal? Are smartphones changing our brains? And does same sex attraction occur in wild animals as well as humans? Join Dr Chris Smith and Kieno Kammies for the answers... Like this podcast? Please help us by supporting the Naked Scientists