Question of the Week
Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...
Why do particles gather in a bucket's centre?
Six-year-old listener Jonathan asks: "when you stir a bucket of water, I know the water is pushed to the outside; however, why do any particles end up the centre after the water has finished spinning? I have asked my Dad, but he doesn't know." Phil Sansom found someone who does…
Do our brains process sound or light faster?
Lionel got in touch to ask us about a curious phenomenon he's noticed since installing a new sensor, raising the question whether our brains process light or sound faster. Eva Higginbotham spoke with Brian Moore of the University of Cambridge who helped us unpick the answer... Like this podcast? Please…
Does burying paper sequester carbon?
Johnny asked us if burying paper counts towards carbon sequestration. To dig up an answer, Adam Murphy spoke to Shaun Fitzgerald, Royal Academy of Engineering Visiting Professor at the University of Cambridge, about how useful that really is... Like this podcast? Please help us by supporting the Naked Scientists
Should you wash, rinse, and repeat?
Julie got in touch to ask whether there was any reason to wash, rinse and repeat, or if it was just marketing hype. Phil Sansom spoke to two hair specialists, Sally-Ann Tarver and Eva Proudman, about this hairy issue... Like this podcast? Please help us by supporting the Naked Scientists
Why do hospitals need so much PPE?
Carol got in touch to ask "The government has provided more than a billion items of PPE to hospitals. There have been 130,000 COVID cases in hospitals, about 10,000 items of PPE per patient. Can you find out why so much?" Eva Higginbotham put the question to medic Isabelle Cochrane…
Why does coffee dissolve so fast?
Neerav wanted to know why some things dissolve faster than others, so we spoke to University of Cambridge chemist Ljiljana Fruk to find out... Like this podcast? Please help us by supporting the Naked Scientists
How alike are the kids of identical twins?
Sam got in touch to ask: "If identical twin brothers marry identical twin sisters, and each of those couples has a child, will those two children be like twins?" Eva Higginbotham put the question to Tessa Bertozzi - a geneticist at the University of Cambridge. Like this podcast? Please help…
Why aren't planes dimpled like golf balls?
Darren got in touch to ask us: "Golf balls are dimpled to disrupt the air around the ball. As far as I can gather, this reduces their drag and allows them to fly further than they would if they were perfectly round. Why do we not see dimpled cars, aircraft,…
Could saponins help fight coronavirus?
We've been hunting down the answer to this questions from Denise: "There are plants that contain saponins and were used by Australian aboriginal people as bush medicine. Is there any research on the antiviral properties of saponins in, for example, Australian Acacia species, or other plants?" Eva Higginbotham spoke with…
Has life changed on the ISS due to COVID-19?
We're blasting off to the International Space Station to answer this question from listener Fady: "has life changed for astronauts on the ISS due to coronavirus, and are astronauts still allowed to be sent to and from the ISS?" Phil Sansom roped in flight surgeon Filippo Castrucci from the European…
How do electrons flow in electric current?
Rakesh got in touch with this question: "Typically when electrons flow for the electric current, do they come out from the atoms and flow as electric current? Is it not true that when electrons come out from atoms light and energy is released? So why don't electric wires change their…
Do we all have the same skin sensitivity?
Matt got in touch with this question: "Do all humans have the same number of nerve endings in their skin, and if so, do those of us who are bigger, either taller or fatter, have reduced sensitivity in a given area of skin?" Eva Higginbotham spoke with Professor Francis McGlone…
How do C-section babies get their microbiome?
Pavel asked us "On one of the Naked Scientists programmes it was mentioned that a newborn baby has initially sterile intestines and gets most of its microbiome during the passage through the uterus and vagina. What happens to children that are brought into this world via caesarean?" We reached out…
Can frogs survive in a sealed terrarium?
Listener Jon sent us this question: "I just purchased some dart frogs which need to live in high humidity conditions. In order to attain this we basically sealed off the terrariums. The question is whether a really sealed terrarium could provide enough oxygen for the frogs through plant photosynthesis alone…
How much power can we get out of fusion?
Fusion could be the most sustainable source of energy in the future. But how much can we get out of it? Like this podcast? Please help us by supporting the Naked Scientists
Are big dogs smarter than small dogs?
Dogs come in all sizes, from tiny Chihuahuas to giant Great Danes. Their head size is hugely different, as must be their brain size. Does this mean that a Great Dane is massively more intelligent than a Chihuahua? Like this podcast? Please help us by supporting the Naked Scientists
Should I be microwaving my kitchen sponges?
Is a kitchen sponge full of bacteria, and will a microwave kill them? We tested this at home and asked an expert! Like this podcast? Please help us by supporting the Naked Scientists
Can a weak immune system worsen sunburn?
Listener Robin asks: "I heard on the podcast, that the reason why we get a sunburn, is that the body is trying to fix cells that are damaged by UV radiation. So if one person is sunburned longer than another, does that mean their immune system is worse?" To find…
Will the poles switching cause problems?
Listener Ray asked us: " The Earth has apparently reversed its polarity fairly regularly, and is perhaps overdue for the next instance. Is anything known about how this will happen, and the effects? How will it affect our reliance on technology?" We put Ray's question to Richard Harrison, Head of…
Why don't women's bodies reject sperm?
Jure asked us "Why doesn't a woman's body reject sperm as a foreign object?" Phil Sansom sought out the answer, by speaking to doctor and sexual health consultant Graham McKinnon... Like this podcast? Please help us by supporting the Naked Scientists