Naked Scientists Special Editions Podcast

Short term memory is incredibly important in day to day life, whether you're driving to work, having a conversation, or reading through the Naked Scientists website. However, scientists from Princeton University have found evidence that exposure to violence reduces short term memory, even if the violent incident occured more than a decade ago. Alexandra Ashcroft spoke to Pietro Ortoleva to find out more... Like this podcast? Please help us by supporting the Naked Scientists

Alzheimer's Disease is one - very common - form of senile dementia. It usually affects older people and progressively robs them of their mental faculties. It occurs because a protein called beta amyloid builds up in the brain forming harmful deposits called plaques, which are toxic to nerve cells. What's confusing though is that the brain naturally makes beta amyloid all the time but seems to wash most of it away when we go to sleep. But what aspect of sleep is important for this clean-up process, and what are the implications for people who are chronically poor sleepers? At Washington... Like this podcast? Please help us by supporting the Naked Scientists

Scientists now think they can explain why the hypervelocity stars - that's stars going at 600 - 1000 km per second are only spotted in one part of the sky, in the constellation of Leo, and it's down to their explosive origins. Douglas Boubert is a second year PhD student in the University of Cambridge, and he and his team used a computer model to try and work out what was going on. Georgia Mills heard what they found. Like this podcast? Please help us by supporting the Naked Scientists

Millions of people worldwide are affected by Alzheimer's Disease; Terry Pratchett was famously a victim of the condition, which progressively robs sufferers of their mental faculties. At the moment, no therapies are available to halt the disease, but it might be possible to keep patients functioning well, for longer, with a bit of brain-training. Cambridge University neuroscientists have invented a memory-boosting app called GameShow. Katie Haylor went to see the game's co-inventor Barbara Sahakian and lead scientist George Savulich... Like this podcast? Please help us by supporting the Naked Scientists

Our coasts are constantly changing. And whilst human impact can have a significant impact Mother Nature also plays her part, tides and storms can change a beach overnight. Continuing with Marine Month, Chris Smith spoke to Oceanographer Simon Boxall from the University of Southampton about what's driving these changes and can we prevent them? Like this podcast? Please help us by supporting the Naked Scientists

If you're up for a bit of practical experimentation, give this a go. Hold your finger out in front of your face, fix your gaze on the tip and then shake your head from side to side, or nodding up and down. Without you having to think about it, your eyes stay locked on their target by precisely matching the movements of your head. But for some people, maintaining a steady gaze like that is impossible because their eyes rhythmically drift off. Luckily a British team of doctors and eye surgeons have come up with a solution based on an implantable pair of magnets. Chris Smith spoke to Parashkev... Like this podcast? Please help us by supporting the Naked Scientists

Many of us enjoy a boiled egg or two for breakfast, but why are hen's eggs round at one end and pointy at the other? Katie Haylor caught up with Mary Stoddard of Princeton University, who's trying to find out why eggs look the way they do. Like this podcast? Please help us by supporting the Naked Scientists

The third week of June had everyone searching for the suncream as temperatures reached record breaking heights. But while most of us enjoy fun in the sun, prolonged heatwaves can have significant health risks and can even be life-threatening. Izzie Clarke investigated just what is causing the surge in dangerous heatwaves and how we can stay cool as things start to heat up. Like this podcast? Please help us by supporting the Naked Scientists

In May 2017 hundreds of thousands of computers across the world were hit by a massive ransomware attack called Wannacry. The perpetrators encrypted the contents of users' computers and demanded payment to unscramble their data. What made the threat worse was that it had the ability to literally spread virally across the Internet by exploiting connections between computers on networks. But where did it come from, what can we do to mitigate the threat, and who is at risk of attacks like this? Chris Smith, Kate Feller and Andrew Holding put these questions to cybersecurity expert Paul Harris,... Like this podcast? Please help us by supporting the Naked Scientists

When viruses attack our crops they can wipe them out, and in some parts of the world, this can be a death sentence. So naturally, scientists are keen to find a way to provide protection against these infections. Viruses usually attack by using parts of the victim's own cell machinery against it, so in theory, if you can change this component or protein, the virus won't recognise it, and its attack will have been neutralised. But, if you fiddle about with the stuff inside a cell too much, the cell won't be able to use it and will die anyway. Now, a group from the University of Granada in Spain... Like this podcast? Please help us by supporting the Naked Scientists

Methane is 20 times worse than C02 as a greenhouse gas, so when it's created as a byproduct in oil rigs it's burned. This is better than releasing the methane into the atmosphere but it's not an ideal solution as it creates more C02. Jeroen Van Bokhoven and his team at ETH Zurich have found a new way to convert the methane into something cleaner, and a bit more useful. Tom Crawford found out what it's being turned it into Like this podcast? Please help us by supporting the Naked Scientists

Looking at biochemical markers found in blood samples of those with autism and those without, researchers are looking to develop a blood test that could serve as a diagnosis tool for autism spectrum disorders. Like this podcast? Please help us by supporting the Naked Scientists

How the plaque found on the teeth of Neanderthals sheds light on their diets and lifestyles. Like this podcast? Please help us by supporting the Naked Scientists

Promoting social causes online can mobilise millions and raise huge sums of money. But it only leads to long term changes if the campaigns don't fizzle out prematurely. Social psychologist, Sander van der Linden, University of Cambridge, thinks he's found the formula for social media campaigns to be effective in the long run, detailing what he calls "viral altruism" in a study published in Nature Human Behaviour. Ricky Nathvani went to go find out exactly what it is... Like this podcast? Please help us by supporting the Naked Scientists

A tiny sensor capable of transmitting information from inside the body and powered by stomach acid has been unveiled by US scientists. The device was tested in a pig over the course of a week wirelessly transmitting its body temperature every twelve seconds to an external receiver. The MIT and Harvard-based team behind the work, which was published this week in Nature Biomedical Engineering, say this represents a step towards safer, cheaper ingestible sensors that could even be used to dispense drugs inside the body. Dr Giovanni Traverso of the Brigham and Women's Hospital at Harvard Medical... Like this podcast? Please help us by supporting the Naked Scientists

Some viral infections are more lethal in men than in women. This is usually linked to differences between male and female immune systems. However, mathematical modelling of the different ways some viruses can spread in men and women suggests it may, in fact, benefit the virus to tailor its aggression based on who it is infecting, as Vincent Jansen from Royal Holloway University explains to Tom O'Hanlon... Like this podcast? Please help us by supporting the Naked Scientists

2016 was another record-breaker in terms of global temperatures, and it's part of a longer-term trend which has seen 15 of the hottest years on record occur since 2001. One victim of this warming is the Artic, where sea ice is steadily retreating, which means that the habitats for species that live there are also radically altering. So are these organisms equipped to cope with the change? Thomas Mock, from the University of East Anglia, has been studying one marine species which use a genetic trick to achieve considerable resilience, as he explained to Tom Crawford... Like this podcast? Please help us by supporting the Naked Scientists

A chemical found in sharks can block the process that leads to Parkinson's Disease, scientists at Cambridge University have found. Know as squalamine, the substance prevents a protein called alpha-synuclein from accumulating on and damaging the membranes of nerve cells in the brain. Dosing with squalamine protected cells cultured in a dish as well as microscopic worms that have been genetically altered to make them develop a Parkinson's-like syndrome. Chris Dobson explains... Like this podcast? Please help us by supporting the Naked Scientists

Us humans boast about our big brains but until now, evidence has been scant to suggest that animals also benefit from having larger brains. Cambridge University's Corina Logan measured the skulls of 1314 red deer from the Isle of Rum to see if the brainy stags and does were more successful. She explained her results to Naked Scientist Tom O'Hanlon... Like this podcast? Please help us by supporting the Naked Scientists

What's your usual Thursday night out? The cinema maybe, or a gig? Well how about a live cheetah dissection at the Royal Veterinary College in London? Don't worry if that's not quite your cup of tea because we sent Connie Orbach along for you... Like this podcast? Please help us by supporting the Naked Scientists