Naked Scientists Special Editions Podcast

Humans do it. Primates do it. And now it's been found out that birds can also do it - 3 day old chickens have been shown to order numbers low to high, from left to right - just like on a ruler! The findings, published in Science, could indicate that this numerical ability is a feature of evolution, rather than culture - and could help explain why we pay more attention to things presented to our left... Zoologist Hannah Rowland from the University of Cambridge put Graihagh Jackson's numerical skills to the test... Like this podcast? Please help us by supporting the Naked Scientists

Quill pens might be about to make a comeback - but not in a stationers! Because researchers have developed a nano-scale ink pen that can be used to control the shapes of polymers that can be used to make superfast computers. Polymers are are giant chemical structures made by linking lots of smaller molecules together, and what Imperial College's Alex Perevedentsev and his colleagues have discovered is that, with a dab of nano-ink delivered in the right way from their nib-pen, they can make polymers adopt specific shapes that alter the way light passes through them. And as he explained to Kat,... Like this podcast? Please help us by supporting the Naked Scientists

A new breed of super metals, that are extremely water repellent have been created. Their potential applications range from rust and frost free aircraft to self-cleaning toilets. Danielle Blackwell spoke to Prof. Chunlei Guo from the University of Rochester to find out more... Like this podcast? Please help us by supporting the Naked Scientists

Sea turtles follow unique magnetic signatures to return to their home beaches to lay their eggs. Like this podcast? Please help us by supporting the Naked Scientists

Bar-headed geese reach altitudes of several thousand meters in their annual migration across the world's highest mountain range. A new study shows that they have a peculiar way to save energy on this long journey, as Khalil Thirlaway finds out from Dr. Charles Bishop of Bangor University... Like this podcast? Please help us by supporting the Naked Scientists

Over 3000 people are killed on the world's roads every day with further 20-50 million people left injured or disabled. And whilst the number of serious injuries have come down - one type of injury -damage to the spinal cord - has remained stubbornly high. The car company Volvo have announced that are aiming to reduce the number of people killed or seriously injured in one of their vehicles in exactly five years time - to zero by 2020. Graihagh Jackson went to their HQ in Gothenberg, Sweden, to hear how... Like this podcast? Please help us by supporting the Naked Scientists

A common New year's resolution is to hit the gym and get fit. But while most people might give up and return to the comfort of the sofa by February, research suggests that being physically active for your whole life has big health benefits. But can it slow down the ageing process? One problem with studying this is that most older people are pretty inactive, or sedentary, and tend to do little if any physical exercise at all. As a result, it's difficult to know whether some of the health issues seen in ageing, such as heart and lung problems or loss of muscle and bone, are just the result of... Like this podcast? Please help us by supporting the Naked Scientists

Could a brain scan predict your weight, your school grades and your happiness levels two years down the line? Like this podcast? Please help us by supporting the Naked Scientists

Whether it's an outing to the cinema or gathered in the living room, films are a great way to spend time as a family at Christmas. If children are involved, the choice of title will often be made with them in mind. Reservoir Dogs might be shelved in favour of Shrek, perhaps. We tend to assume that films aimed at children are less likely to involve complex, frightening or upsetting themes, such as death. Not so, according to a recent study published in the British Medical Journal which found two and a half times more death in children's cartoons than grown-up films. Khalil Thirlaway talks to... Like this podcast? Please help us by supporting the Naked Scientists

Last week scientists attending the American Geophysical Union meeting in California unveiled measurements made on Mars by the Curisoity rover, which has been exploring the red planet for the last 2 years. What Curiosity has uncovered are organic molecules and also periodic puffs of methane gas, both of which might be signs that life is, or once was, present on Mars. Chris Smith spoke with the Open University's Professor of Planetary Science David Rothery to hear more about what these findings might mean... Like this podcast? Please help us by supporting the Naked Scientists

People often talk about feeling their age, but how old you say you feel is strongly linked to your life expectancy. A new study at UCL in London has shown that people who feel their age, or feel even older than their real chronological are almost 40% more likely to die than someone of the same age who - in their head at least - feels younger, as Andrew Steptoe explains to Chris Smith... Like this podcast? Please help us by supporting the Naked Scientists

There's the old saying that if you want to understand someone, you should walk a mile in their shoes. But what if you could walk in their actual body? Thanks to virtual reality headsets, this is now - at least virtually - possible. And by fooling people into thinking they have a child's body, or one belonging to someone of a different skin colour, Mel Slater and his colleagues in Barcelona discovered, as he explained to Kat Arney, that this changes their behaviour too... Like this podcast? Please help us by supporting the Naked Scientists

How do we know about the ancient animals that used to roam the Earth? If all life got its start in the sea, then why do most animals now live on land?Sara Sjosten went behind the scenes at the Sedgwick Museum of Earth Science with Sarah Finney to find out more about where fossils come from and one special little creature from 360 million years ago... Like this podcast? Please help us by supporting the Naked Scientists

Luis von Ahn invented CAPTCHA - the system that uses a picture of a word to determine whether you are a human or a computer. But when von Ahn realised just how much time was being wasted by filling in CAPTCHAs, he wondered whether that man-power could be used for something good. Now the very same process is digitising millions of books, that are available for free, as von Ahn told Chris Smith. Like this podcast? Please help us by supporting the Naked Scientists

What's the science behind the so-called 5:2 or intermittent fasting diet? Like this podcast? Please help us by supporting the Naked Scientists

Does your dog pay attention to what you say? Thinking back to the last time it rolled in something stinky, or ran off with your socks, you may not be convinced. But new research from the University of Sussex shows that man's best friend is at least listening; and not only to what we say, but how we say it. Georgia Mills spoke to Victoria Ratcliffe, who tested over 200 willing canines... Like this podcast? Please help us by supporting the Naked Scientists

Marie Blackman Northwood is a biomedical scientists normally based in Cambridge,who is currently in Sierra Leone, lending her hand to the fight against Ebola. She spoke to Chris Smith about her experiences. Like this podcast? Please help us by supporting the Naked Scientists

Religion and nature might have more to do with each other than you thought. In the biggest study of its kind, a team of evolutionary biologists, anthropologists, linguists and religious scholars examined the religions of societies from around the world to see if there was any link between where they lived and what they believed. They found that they can predict which societies will worship moralising high gods - gods who are believed to have created the earth and who care about how humans treat each other - based on how harsh the environments are that people live in. Sara Sjosten spoke to lead... Like this podcast? Please help us by supporting the Naked Scientists

Are you a morning person or a night owl? Whichever you are, your daily rhythm is determined by your circadian clock - powered by a small group of cells in the brain - and it tells you when to get up and when to sleep. Now Professor Bill Wisden and his team at Imperial College have discovered a second biological clock in the brain, located in a little cluster of nerve cells that produce a chemical called histamine, which helps to wake us up. Kat spoke to him to find out more about this molecular alarm clock. Like this podcast? Please help us by supporting the Naked Scientists

Just a handful of genetic changes are what turned wildcats into domestic pets, scientists have now shown. And many of these changes are linked with genes that affect how the brain processes rewards and pleasure. In other words, humans won over cats by appealing to their desire for kitty treats and stroking. Over time, those that responded best to this nurturing were more likely to be bred by humans, leading to increasingly docile, domesticated pets. Graihagh Jackson has been hearing from some cat lovers but first she spoke to one of the researchers - Bronwen Aken from the Wellcome Trust's... Like this podcast? Please help us by supporting the Naked Scientists