An update on the Pfizer vaccine for Covid-19, the lotto likelihood of sequential winning numbers, why swallows congregate around motorway bridges, the logistics of keeping the Covid-19 vaccine cold, and why is it dark in space? Also, why is there a Covid-19 vaccine in 10 months but no HIV vaccine after 4 decades, would we still have tides without the Moon, and why is the Moon white since the sky is blue? Join Dr Chris and 567 CapeTalk's Kieno Kammies for the answers... Like this podcast? Please help us by supporting the Naked Scientists

Why shear a sheep in winter when it's cold? And can animals count? Why do geese and turkeys chase people? Also, how does coronavirus infection alter our sense of smell and taste? How do artificial sweeteners work? And when it comes to survival of the fittest, what constitutes "the fittest"? What brings asteroids onto a collision course with the Earth? Dr Chris joins Kieno Kammies to answer this week's crop of farmyard-inspired - and other - questions... Like this podcast? Please help us by supporting the Naked Scientists

Why did touching something make me taste metal? Also, what's the best liver detox, why does listening to loud music stop a stammer, does music help attention deficit disorder and is sunrise to the south even in the southern hemisphere. We also wonder whether perpetual motion is possible, why the sun can make some people sneeze, why ice cubes sometimes crumble, and how some fruits encourage others to ripen. Join Dr Chris Smith and Kieno Kammies for the answers... Like this podcast? Please help us by supporting the Naked Scientists

Why does my Coke froth up when I add ice? How is an oesophageal stricture treated? Does immunity to other coronaviruses confer immunity to Covid-19? Can cats smell things that are poisonous? Why do athletes place their hands on their hips after exercise? And how do fingers help with heat control. Join Dr Chris Smith and Talk Radio 702 Azania Mossaka for all the answers... Like this podcast? Please help us by supporting the Naked Scientists

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