Naked Scientists Special Editions Podcast

Imagine it's a Friday night, you're in the pub it's and really noisy. Your friend though is telling a great story, and you really want to hear it. But how do you separate their voice from the din going on around you? This week scientists at Imperial College have sussed out the answer. Like this podcast? Please help us by supporting the Naked Scientists

We all use Wi-fi nearly every day. It is short for wireless fidelity, using microwaves frequencies to transmit data to and from your phone. But, visible light can be used to for the same purpose - with a technology being developed at Edinburgh University called Li-Fi, which would be faster and more secure. It works by making the lights in a room flash incredibly quickly to send signals. It's too fast for us to see, but does it nonetheless affect us, or the performance of the lights? Georgia Mills spoke with Wasiu Popoola from Edinburgh University to find out... Like this podcast? Please help us by supporting the Naked Scientists

Scientists in the US have discovered a way to recreate the condition polycystic kidney disease using stem cells in a culture dish. The new culture system means that researchers can now begin to screen thousands of potential drug molecules to find ways to prevent the disease from progressing in humans. Like this podcast? Please help us by supporting the Naked Scientists

Astronomers are trying to understand where our solar system came from, how life got started here, and where else in the galaxy life may be lurking. Chemistry is very important in these processes both in terms of providing chemical building blocks from which things can form, but also providing chemical signatures that highlight that something - like life - is happening. We had thought that one compound, called methyl chloride, was a surefire sign of life, but now astronomers in America and Denmark have detected the same chemical around a star without any planets, as well as on a comet in our... Like this podcast? Please help us by supporting the Naked Scientists

Three quarters of the world's honey is laced with neonicotinoid insecticides, a new study from scientists in Switzerland has shown this week. The findings are based on an analysis of nearly 200 honey samples collected from around the world with the help of citizen scientists on every continent (except Antarctica!). Neonicotinoids are the most widely used pesticides in the world now and scientists suspect that, by getting into pollen and nectar, they're also having off-target effects on pollinators, like bees. This the first comprehensive global study to look at how widespread these effects... Like this podcast? Please help us by supporting the Naked Scientists

Natural muscle plays an important role in our human ability to control our movements, so could we give this ability to robots? Katie Haylor spoke to Aslan Miriyev from Colombia University in New York, who's developed a soft, synthetic muscle that can substantially expand and contract alongside being strong. Like this podcast? Please help us by supporting the Naked Scientists

By 2050, it is estimated that we will need around a 50% increase in crop yield to feed our rapidly growing population. However, it turns out that algae - the slimy green layer often found on the surface of ponds in summer - may provide a solution to this problem. Stevie Bain chatted with Luke Mackinder from The University of York about how a better understanding of algae may allow us to engineer fast-growing crops Like this podcast? Please help us by supporting the Naked Scientists

The complex branching patterns seen in the growth of tissues in the lungs, kidneys and pancreas have an elegantly simple mathematical solution... Like this podcast? Please help us by supporting the Naked Scientists

We never really notice oral hygiene, except when it's bad. The latest research shows that we can't really blame genetics for this, but rather the oral hygiene of everyone else in your household. Like this podcast? Please help us by supporting the Naked Scientists

From elaborate peacocks to seagulls by the shore, birds are found in a wide range of habitats on every corner of globe and a recent study suggests that the key to their world domination may all be in their heads. Stevie Bain chatted with Arkhat Abzhanov to find out more Like this podcast? Please help us by supporting the Naked Scientists

One major goal of scientists has been to measure the strength of tectonic plates. However, laboratory estimates of plate strength vary widely and in general seem to overestimate strength compared to real world observations. Thus, there has been a fundamental lack of understanding about how plate dynamics work, until now. Like this podcast? Please help us by supporting the Naked Scientists

C. diff - or Clostridium difficile - is a superbug that can cause major problems in hospitals. It leads to life-threatening diarrhoea and intestinal inflammation in patients who catch it, it spreads easily, and patients who do recover often relapse many times afterwards because the spectrum of so-called "good bacteria" in the bowel also goes off-kilter when you treat the infection. What's needed are highly-targeted antibiotics that can hit exclusively c. diff and not affect the good bacteria that we need to keep us healthy. Luckily, Sheffield University's Joe Kirk is on the case... Like this podcast? Please help us by supporting the Naked Scientists

Finding new drugs for our various diseases and ailments is one of the biggest industries in the world. But how does so called big pharma operate - how do they choose what to work on and how does an idea get from the lab to your local chemist? Astra Zeneca, one of the world's leading pharmaceutical companies, have recently moved to Cambridge, so Chris Smith took the opportunity to ask Mene Pangalos, Executive Vice-President of AstraZeneca's Innovative Medicines and Early Development Biotech Unit, about how a company like his invents and markets medicines in the modern era... Like this podcast? Please help us by supporting the Naked Scientists

Known as the 'forests of the ocean', coral reefs represent an entire underwater ecosystem, teeming with life. But this ecosystem is under threat. Researchers from The University of Queensland and Colby College in the USA have used old 18th century nautical charts and compared them to modern satellite data as a novel way to understand coral loss over a period of 240 years. Michael Wheeler spoke with lead researcher Loren McClenachan, assistant professor at Colby College to find out more. Like this podcast? Please help us by supporting the Naked Scientists

It's well known that older mothers have more complicated pregnancies. For a long time scientists thought that old eggs were the reason for this and many women have made the decision to freeze their eggs to circumvent this problem. But new research from the Babraham Institute in Cambridge suggests that the age of the uterus is important too. Alexandra Ashcroft spoke to Laura Woods to find out more Like this podcast? Please help us by supporting the Naked Scientists

Bacteria produce a molecule that stimulates sexual reproduction in the closest living relatives of animals, according to researchers at UC Berkeley and Harvard Medical School. Like this podcast? Please help us by supporting the Naked Scientists

Our hairy insides protect us from the full force of fluids racing through our bodies and may inspire future robotic design Like this podcast? Please help us by supporting the Naked Scientists

Osteoarthritis is a common, painful joint condition that affects about 8 million people in the UK, and many others across the world. It stems from a breakdown of the protective cartilage at the ends of bones causing pain, swelling and movement problems, commonly in the knee. Osteoarthritis cases have been on the rise, but not for the reasons you might think. Katie Haylor spoke to palaeoanthropologist Ian Wallace from Harvard University, who has taken a historical perspective on finding out why... Like this podcast? Please help us by supporting the Naked Scientists

What kinds of food might you be able to forage in a city green space? Katie Haylor went out to explore what wild food Cambridge in the UK has to offer with lifelong forager Antony Bagott.... Like this podcast? Please help us by supporting the Naked Scientists

More than half a million people in the UK suffer from Alzheimer's disease. Symptoms of this disease, including memory loss and communication problems, are due to sticky protein build ups within the brain, called amyloid plaques. These plaques cause damage to nerve cells and are a hallmark feature of the disease. Currently, there is no cure for Alzheimer's disease. However, researchers at Yale University School of Medicine have made a striking discovery about the role of cellular garbage disposal units, called lysosomes, in the formation of these plaques. Lead researcher on the study, Shawn... Like this podcast? Please help us by supporting the Naked Scientists