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...
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
QotW - Why does my phone coverage vary?
Listener Derek got in touch with this question - "I can sit at my work desk, with my phone by my side, and the signal strength display goes from saying "no service" to 4 bars out of 5, within a couple of minutes, for no obvious reason. It varies like…
What is the best way to heat my home?
Tim says: "The experts at the Energy Saving Trust and British Gas say it's cheaper to heat your home only when you need it. But my heating control panel says that it uses less energy to keep a background temperature when the room is unoccupied, than it does to allow…
QotW - Do hairs grow out grey, or turn grey?
Elizabeth got in touch to ask: "do hairs grow out grey, or do hairs that have colour eventually turn grey?" We asked hair expert Desmond Tobin, director of the Charles Institute of Dermatology, University College Dublin... Like this podcast? Please help us by supporting the Naked Scientists
Why isn't sea level rise the same worldwide?
Listener Geoff asks, "How is it that there are rising sea levels impacting some island nations such as the Maldives and Kiribati, yet 1000 kilometres in any direction there is no discernible sea level change at all?". To answer this question, Nadeem Gabbani spoke to Dr. Rob Larter of the…
Do mosquitoes prefer certain blood types?
Vinny asked us: "I have read mosquitos have a preference for blood type and prefer people with Type O blood over those with Type B, or prefer Type B over Type A. Is this true, and how do they know the difference between types?" To seek out an answer to…
Why does my watery windscreen turn to ice?
Mike got in touch to say: "When the outside temperature is hovering around the freezing mark, the condensation or dew on my automobile windshield is in a liquid state. But if I wipe the windshield, the liquid water changes to ice. Why is that?" To help, Adam Murphy spoke to…
Could you eat a dinosaur?
Dan got in touch to ask whether most animals are edible, including dinosaurs! Mariana tucked into this question.... Like this podcast? Please help us by supporting the Naked Scientists
Will SpaceX's satellites clog up the sky?
Listener Pete asks, "SpaceX has launched the first 60 of what is to be a mesh of some 12,000 satellites. Two questions: how will this completed mesh impact 1) ground based optical and microwave astronomical observations, and 2) the ability of future space missions, manned and otherwise, to navigate through…