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 colours?" Eva Higginbotham got in touch with Dr Ankita Anirban to find out the answer... Like this podcast? Please help us by supporting the Naked Scientists
May 26, 2020•4 min•Ep. 436
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 from Liverpool John Moores University to feel out the answer... Like this podcast? Please help us by supporting the Naked Scientists
May 19, 2020•3 min•Ep. 435
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 to Peter Brocklehurst from the University of Birmingham to find out... Like this podcast? Please help us by supporting the Naked Scientists
Apr 20, 2020•4 min•Ep. 434
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. Who would win: the frogs or the plants?" Phil Sansom got the answer to this 'pet peeve' from plant scientist Stephanie Smith... Like this podcast? Please help us by supporting the Naked Scie...
Apr 06, 2020•4 min•Ep. 433
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
Mar 16, 2020•4 min•Ep. 432
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
Mar 02, 2020•4 min•Ep. 431
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
Feb 24, 2020•4 min•Ep. 430
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 an answer to this burning question, Adam Murphy spoke to dermatologist Jane Sterling... Like this podcast? Please help us by supporting the Naked Scientists
Feb 10, 2020•3 min•Ep. 429
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 the Department of Earth Sciences at the University of Cambridge, and he gave us a flipping good answer... Like this podcast? Please help us by supporting the Naked Scientists...
Jan 27, 2020•4 min•Ep. 428
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
Jan 20, 2020•4 min•Ep. 427
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 this all day, every day. I can understand why some places have good coverage, and others have bad coverage, but why should it vary so much in one place?" We asked signal expert Ramsey Faragher from Focal Point Positioning and Cambridge University to...
Jan 13, 2020•4 min•Ep. 426
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 the dwelling to chill too much. I'm confused! Which advice is correct?" We put Tim's question to Mike Childs, head of science, policy and research at Friends of the Earth. Also helping us out is Lewis Tyronney, an engineer with Briti...
Dec 16, 2019•5 min•Ep. 425
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
Dec 09, 2019•4 min•Ep. 424
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 British Antarctic Survey... Like this podcast? Please help us by supporting the Naked Scientists
Nov 25, 2019•3 min•Ep. 423
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 this one, Adam Murphy got in touch with Immo Hansen, from New Mexico State University to find out... Like this podcast? Please help us by supporting the Naked Scientists
Nov 18, 2019•4 min•Ep. 422
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 Liz Thomas from the British Antarctic Survey... Like this podcast? Please help us by supporting the Naked Scientists
Oct 28, 2019•3 min•Ep. 421
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
Oct 21, 2019•4 min•Ep. 420
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 the cloud of objects?" To answer this question, Phil Sansom got in touch with two experts: UCL's Ingo Waldmann, and ESA's Holger Krag... Like this podcast? Please help us by supporting the Nak...
Oct 14, 2019•4 min•Ep. 419
Julie wrote in with this question for us: "I have received such conflicting advice from TV food cooks. Some say that cooked chicken should be allowed to cool down to room temperature before refrigeration whilst others say to put the hot cooked chicken into the refrigerator immediately. Which is right?" Mariana Marasoiu nibbled away at this question with Paul Wigley from the University of Liverpool... Like this podcast? Please help us by supporting the Naked Scientists...
Sep 30, 2019•3 min•Ep. 418
John asked, "I'd like to know if enough people in the world donated their finger and toe nail clippings, could enough keratin be produced to satisfy the demand and thus stop the poaching of wild animals in Africa?" Mariana Marasoiu spoke with Jon Taylor from Save the Rhino International and Simon Hedges from Asian Arks about whether rhino horn alternatives can help save them... Like this podcast? Please help us by supporting the Naked Scientists...
Sep 23, 2019•5 min•Ep. 417
This week's question is a curious cooking query from Anthony. "When pasta or rice is added to boiling water, there is a sudden surge of the boiling water to the point that the pot boils over with bubbles. Why is this?" Phil Sansom got in touch with Phillip Broadwith, business editor of the magazine Chemistry World... Like this podcast? Please help us by supporting the Naked Scientists
Sep 16, 2019•4 min•Ep. 416
This week, a question from Bill. "My question is about Chernobyl and why it is that wildlife seems to be thriving there and yet we understand that humans still can't survive there. Why is this?" Phil Sansom spoke to someone who's actually been there - Victoria Gill, a science correspondent for BBC News... Like this podcast? Please help us by supporting the Naked Scientists
Aug 19, 2019•4 min•Ep. 415
Saugat asked "what is the exact cause of monsoon rain, and how will it be affected because of global warming?" Ruth Geen, from the University of Exeter, works with modelling the effect of climate change on monsoons and helped Emma Hildyard pour some insight into this... Like this podcast? Please help us by supporting the Naked Scientists Like this podcast? Please help us by supporting the Naked Scientists...
Aug 04, 2019•4 min•Ep. 414
This week, Manik from Canberra asked if it's possible to tell whether it's sunrise or sunset from looking at a photo or a painting. Ankita Anirban spoke to painter James Gurney and physicist William Livingston to shed light on the situation... Like this podcast? Please help us by supporting the Naked Scientists
Jul 28, 2019•4 min•Ep. 413
This week we are answering a question from Alex: "Are huskies (or dogs in general) able to insulate themselves from the cold of winter and from the heat of a hot summer's day as well?"Matthew Hall asks Christof Schwiening from Cambridge University's Department of Physiology... Like this podcast? Please help us by supporting the Naked Scientists
Jul 14, 2019•4 min•Ep. 412
This week we are answering a question sent in by Mark: "is it possible to have so many blood transfusions that your blood type changes?" Emma Hildyard asks Cedric Ghevaert, from the Department of Haemotology at the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists
Jul 07, 2019•4 min•Ep. 411
Patrick sent us this question: "My wife wants me to light a candle after doing my number two, to get rid of the smell. Does this actually do anything?"Phil Sansom has been sniffing out an answer, with the help of Kit Chapman from Chemistry World. Like this podcast? Please help us by supporting the Naked Scientists
May 19, 2019•5 min•Ep. 410
Greg asked, "When I exhale, my breath contains carbon atoms. How long ago were they in my food or drink?" We were hungry for answers, so Ruby Osborn asked Fred Warren from the Quadram Institute Bioscience to break it down... Like this podcast? Please help us by supporting the Naked Scientists
May 12, 2019•4 min•Ep. 409
Sean asked "Why is it that when you look directly at a small faint star it disappears, but when you look at a point near it, you can see it again?" Ben McAllister has been searching far and wide for the answer to this cosmological conundrum... Like this podcast? Please help us by supporting the Naked Scientists
Apr 28, 2019•5 min•Ep. 408
We received this question from Aidan, "Consuming orange carrots in high excess can turn your skin orange, because of the beta-carotene. What about purple carrots?" Jack Tavener and Katie Haylor have been crunching through some research to get to the root of this question.If you enjoyed this episode, please leave a review. Plus, for more podcasts by The Naked Scientists head to nakedscientists.com/podcasts. Like this podcast? Please help us by supporting the Naked Scientists...
Mar 31, 2019•4 min•Ep. 407
