Question of the Week, from the Naked Scientists

Thanks to Jess Neumann for the answer! Like this podcast? Please help us by supporting the Naked Scientists

When Tony is cycling around, he notices that the clouds above him are not always moving in the same direction as he feels the wind blowing him down on the ground. Why might this be? James Tytko took on the question with help from Paul Williams, Professor of Atmospheric Science at the University of Reading... Like this podcast? Please help us by supporting the Naked Scientists

Donald wants to know, 'how big is a photon?' Marushka Soobben took on his query with help from Ben Allanach, professor of theoretical physics at the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists

David wants to know, 'How much do the senses take up in brain capacity and what sense occupies the largest part of the brain (I would guess it would be sight?)' James Tytko took on his query with help from Holly Bridge, professor of neuroscience at the University of Oxford... Like this podcast? Please help us by supporting the Naked Scientists

This time on Question of the Week, Mark wants to know what effect lower levels of oxygen in aeroplanes might have on how we feel after a flight, and what impact the smoking ban might have had. As a follow up, he wonders about jet lag and whether it's possible to suffer its consequences after a long haul flight to somewhere in the same time zone. James Tytko asked Malcom von Schantz, Professor of chronobiology at Northumbria University, for help with the answer... Like this podcast? Please help us by supporting the Naked Scientists

Darren wants to know, 'Why can we see the light from the first galaxies. Why hasn't that light already passed us if it is from so long ago when the universe was smaller.' Strap in for a mind bending journey across the universe with James Tytko and Daniel Whiteson, Professor of Physics and Astronomy at the University of California, Irvine. Be sure to check out Daniel's podcast: 'Daniel and Kelly's Extraordinary Universe.' Like this podcast? Please help us by supporting the Naked Scientists

Joao wants to know what happens when stem cells of our own, which have been cultivated outside the body, are reintroduced to the bloodstream. This got James Tytko thinking about autologous stem cell transplants, used as a treatment for some forms of blood cancer. He asked Tania Dexter, haematology registrar, and senior medical officer at the Anthony Nolan Institute, to help explain... Like this podcast? Please help us by supporting the Naked Scientists

Will wants to know what the implications would be for our world if the landmass was rotated 90 degrees, so current day Mexico was nearer the South Pole. Trying to wrap his head round all of the possible implications, James Tytko enlisted Dr Alex Farnsworth, Senior Research Associate from the School of Geographical Sciences at the University of Bristol, to help come up with an answer... Like this podcast? Please help us by supporting the Naked Scientists

Brian wants to know, if 2 AI's were to have a conversation with one another, what would they talk about? James Tytko put this query to the test, and asked Mike Pound, professor of computer vision at the University of Nottingham, to help make sense of it all... Like this podcast? Please help us by supporting the Naked Scientists

Thanks to John Maher for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Kiran wants to know how animals like dogs are able to follow commands from humans. James Tytko asked Nicky Clayton, Professor of Comparative Cognition at the University of Cambridge, to help with the answer... Like this podcast? Please help us by supporting the Naked Scientists

Alan writes in, acknowledging that many animals use the Earth's magnetic field for navigation purposes. Given the shifts in poles and field intensity we experience due to convection currents in the Earth's core, how do they stay on course? James Tytko asked Miriam Liedvogel, professor of ornithology, to help find the answer... James - The best supported ideas include the presence of a tiny compass needle of magnetic iron oxide in the beaks of some birds. Or there's the radical pair hypothesis, which explains magnetoreception with quantum mechanics. Mirjam Liedvogel is director of the Institute... Like this podcast? Please help...

In 1977, astronomer Jerry Ehman detected a narrowband radio signal, far stronger than any that have been recorded before or since, using Ohio State University's Big Ear telescope as it was pointing in the direction of the Saggitarius constellation. Listener to the show, Donald, wants to know if any consensus has been reached as to the origin of the signal, which James Tytko sought to find out with the help of former BBC science editor, David Whitehouse. Like this podcast? Please help us by supporting the Naked Scientists

Thanks to John Travers for the answer!Listener Francisco asked: I have been told that jumping on a trampoline is healthy for humans. It is considered as a good exercise; and also to better coordinate brain and body. I am 73 and wonder whether it is advisable for me to jump on a spring board?John - My work in reversing frailty and building resilience in older adults has made me a big advocate for resistance exercises like trampolining. This should be combined with consuming sufficient protein to turn that work into stronger muscles and bones. Jumping on a trampoline can...

Silke is writing all the way from French Polynesia, asking what's best to do with all the plastic rubbish she picks up from the beach, and whether burning it is advisable. James Tytko asked Richard Lampitt from the National Oceanography Centre to help find an answer... Like this podcast? Please help us by supporting the Naked Scientists

Listener to the show, Elaine, wants to know whether her mother, who was a thalidomide baby, might have passed on effect of the drug to her children. Thalidomide was a treatment for morning sickness which caused severe birth differences in children born to mothers who used the drug. James Tytko sought an answer, with help from Neil Vargesson, Professor of Developmental Biology at the University of Aberdeen... Like this podcast? Please help us by supporting the Naked Scientists

Garth wants to know, given the skin can block water from passing through it, how do certain skin creams allege to permeate into our body? James Tytko took on the question with help from Richard Guy, Professor of Pharmaceutical Sciences at the University of Bath... Like this podcast? Please help us by supporting the Naked Scientists

Garth writes in wanting to know why the prevalence of lactose intolerance is nearly 100% in countries like South Korea, but down in the low single digits in countries like the UK. James Tytko asked Mark Thomas, Professor of Evolutionary Genetics at UCL, for the answer... Like this podcast? Please help us by supporting the Naked Scientists

Dan wants to know what the likelihood is of him being here if neither him, his parents, nor his grandparents had had any vaccinations. James Tytko sought to provide an answer, with the help of Helen Bedford, Professor of Children's Health at UCL... Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Philippa Browning for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Bill sends his question in all the way from Australia. A regular listener, he enjoys our programme through bone conduction headphones. But what are these devices, and does listening to loud sounds through them predispose a person to damaging their hearing in the same way as traditional headphones? James Tytko seeks the answers, with help from audiologist Roger Lewin... Like this podcast? Please help us by supporting the Naked Scientists

Kevin wants to know, assuming many of us will be driving electric cars in the future, what will happen to the vast quantities of petrol currently refined from crude oil? Will we scale back production? Or can industry adapt? To help James Tytko with the answer, we hear from Professor Nilay Shah, Director of the Centre for Process Systems Engineering at Imperial College London... Like this podcast? Please help us by supporting the Naked Scientists

George writes in to ask whether his gum-chewing habits are related to his tinnitus, or whether it's just a coincidence that it comes back when he gets back into the habit. James Tytko investigates, with help from ear, nose and throat doctor Malcolm Hilton... Like this podcast? Please help us by supporting the Naked Scientists

In our Question of the Week, Andrew wants to know why many people may experience dreams differently when holidaying in the mountains. To find out what might be behind the 'high-definition' dreams associated with high places, James Tytko sought the help of Andrew Murray, Professor of Metabolic Physiology at the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists

Damian wants to know, if at one stage all of the continents were joined together, what was on the other side? Was it all just water? James Tytko investigated whether this was the case, and what the consequences would be for conditions on Earth of one giant global ocean... Like this podcast? Please help us by supporting the Naked Scientists

Dave writes in wanting to know whether there is any way to get nuclear energy onto the grid without heating up water to turn a steam turbine. A great question that sees James Tytko dip his toe into the uranium heated waters of nuclear engineering... Like this podcast? Please help us by supporting the Naked Scientists

David wants to know, after looking at distant galaxies in the night sky, how long it took to create them. James Tytko took on the question with the help of the University of Cambridge's Public Astronomer, Matt Bothwell... Like this podcast? Please help us by supporting the Naked Scientists

Parasites have to come up with all sorts of tricks to evade the immune system of their hosts. But Kate wants to know, how do they know they've found the right place? James Tytko took her question on with help from Catherine Merrick, professor of parisitology at the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Cambridge University's Andy Wheeler for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Rick wants to know why the Canada geese he's been observing, who are preparing to migrate for the winter, are honking so incessantly while flying in formation. Viola Ross-Smith from the British Trust for Ornithology was on hand to help James Tytko with the answer... Like this podcast? Please help us by supporting the Naked Scientists

Van writes in with, 'A friend is encouraging me to take a cancer screening test that screens for many different cancers. A review of one test says: "While overall it picks up 90% of stage 4 cancers, it only detects an average of 17% of stage 1 cancers. Yet it is being touted as a test that can detect cancer early." Are these tests worthwhile?' James Tytko took on the question with the help of Professor Rebecca Fitzgerald, Founding Director of the Early Detection Institute at the University of Cambridge... Like this podcast? Please help us by supporting the Naked Scientists

If dinosaurs hadn't been wiped out by a mass extinction event, would there have been room for humans to grow into the successful species we are today? That's what Colin wants to know, and James Tytko has promised to find the answer. He spoke with Dr Charlotte Kenchington from the University of Cambridge's Department of Earth Sciences... Like this podcast? Please help us by supporting the Naked Scientists

Pamela wants to know whether the distribution of chemical isotopes is the same on other planets as it is on Earth. Take carbon, for example, 99% of which is carbon-12 on Earth while 1% is carbon-13? To find the answer, James Tytko asked Xander Byrne from the University of Cambridge's Institute of Astronomy... Like this podcast? Please help us by supporting the Naked Scientists

David wants to know whether the intricate and varied spiders' webs seen in nature are a product of arachnid instinct, or something that is cultivated across their life. To get to the truth, James Tytko sought out spider expert Professor Sara Goodacre from the University of Nottingham... Like this podcast? Please help us by supporting the Naked Scientists

Jim writes in to say, 'Sometimes when I pinch near my knee, I will feel a tingling or tickling sensation behind one of my shoulder blades. What's up with that?' James Tytko found him an answer, with help from neuroscientist Dr Mark Hoon from the NIH... Like this podcast? Please help us by supporting the Naked Scientists

Oscar asks whether the snail stuck on the inside of his car wheel while he went for a drive would have felt the effects afterwards. Jon Ablett from the Natural History Museum helped James Tytko with the answer... Like this podcast? Please help us by supporting the Naked Scientists

Akori wants to know whether it is safe to eat vegetables and herbs grown where animals have been buried in the past. James Tytko sought the help of Professor Malcolm Bennett at the University of Nottingham's School of Veterinary Medicine and Science... Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Jim Dale for the answer! Like this podcast? Please help us by supporting the Naked Scientists

This week, Carl writes in to ask whether he can be cured of specific musical anhedonia. This is a condition whereby a person can hear and distinguish between different types of music and the emotion they convey, but doesn't feel moved in the same way most people do. James Tytko took on Carl's conundrum with the help of Malinda McPherson, Assistant Professor at Purdue University's Department of Speech, Language and Hearing Sciences... Like this podcast? Please help us by supporting the Naked Scientists

When listener Suzy is taking pictures of the night sky, she makes use of longer shutter speeds to capture more light to get better images of stars. That got her thinking, do human eyes also have a shutter speed? James Tytko took up the question... Like this podcast? Please help us by supporting the Naked Scientists