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We explore the explosive science of volcanoes this week! We find out what you can learn from drilling into a restless volcano, how gravity is used to "weigh" volcanoes and watch them fill with magma, and we explore the theories behind volcano formation. Plus, we hear about the genes that could mean you'll live to be 100, fossil evidence of the earliest multi-cellular organism and the signs that Sabre-toothed tigers packed a mighty punch, as well as a big bite. In Kitchen Science, we get messy with a cola and wallpaper paste eruption!

Why do we have eyebrows? Can we taste food if we can't smell it? What's a cold sore? This week, we take on your science questions, as well as explore the world of social gaming, and find out how much it costs to fly an England flag from your car. We'll be asking if altitude affects how a football flies, if a large enough fan could propel a spacecraft and how spiders spin webs from one tree to the next. Plus, why size matters in bird beaks, how plant roots cope with competition and building lungs in the lab!

Seriously small structures are the focus of this week's Naked Scientists, as we look at nanostructures and their role in future energy technologies. We'll find out how nanostructures could enable us to safely store and quickly access hydrogen fuel, and to get the best from our batteries. Also, catching swine flu in the act of mutating, why females are more likely to suffer the effects of stress and weaving bomb proof curtains that expand when they're stretched. Plus, in kitchen science, we find out why soap bubbles create such beautiful colours.

We celebrate 50 years of Lasers on the Naked Scientists this week, by looking into the history, and future, of laser science. We'll hear how lasers have revolutionised manufacturing and could be the answer to our clean energy concerns. Also, how lasers make the most accurate measurements for high precision industries, and how laser tweezers can be used to manipulate things smaller than a red blood cell, and make tiny tools. In Kitchen Science, Dave launches his bid for world domination by building a home-made laser! Plus, how sharks sniff out a snack, the technology that keeps world cup matches safe and accessible, and how the Deepwater Horizon oil spill will affect Louisiana's wetlands.

The science of social species goes under the microscope this week. We hear what radio-tagging individual ants is revealing about the way they organise their nests to decide who goes hunting and who stays at home. Meera explores the growth of urban apiculture, including why city-made honey tastes superior to its countryside equivalent, we find out how bees encountering hostility use a stop signal to deter their fellow foragers from befalling the same fate, and in Kitchen Science we explore the physics of flight to see how bees stay airborne. Plus why not cleaning your teeth could cause a heart attack, how early humans eschewed vegetarianism, mongooses that teach each other nut-cracking tricks and how to give a reef a coral transplant!

In this Naked Scientists Question and Answer show, we find out if bacteria will grow on a bar of soap, why bird poo is white and whether or not a moon can have its own moon. Also, do sweeteners alter your metabolism and can we re-stock the oceans with farmed fish? Plus, we explore the oily threat to Bluefin Tuna, a newly discovered way that blood vessels in the brain clear a blockage, how channels on Mars reveal secrets about the Martian climate, and why shape is essential for H. plyori - a gut bug associated with ulcers and cancer. In Kitchen Science, Ben and Dave recreate a classic experiment to show that flames are hollow!

Cancers you can catch go under the Naked Scientists microscope this week. We find out how a transmissible facial tumour is devastating devil populations in Tasmania and also hear how the Human Papilloma Virus (HPV) causes cancer. Also, Meera looks into the science of cervical screening, and Ben and Dave reveal how carrots can help us to spot cancer cells. Plus, biofuel hope from the burning bush plant, the battle between Staphylococcus species, and the introduction of Synthia - the first microbe with a genuinely synthetic genome.

We explore synthetic biology in this Naked Scientists Show, finding out how to learn from, and improve on, the structures and systems we find in nature. We'll meet the team of students who designed a biological sensor to win the international genetically engineered machine competition, or iGEM, and find out how to build bespoke proteins. In Kitchen Science, we feed an egg to some enzymes to find out how biological washing powder works. Plus, what the brain does when it sees a familiar face, genetically modified crops boost resistant bug numbers, how to create hair cells, essential for hearing, in the lab and how Tibetans living the high life have different genes to their lowland neighbours!

Is there a cure for spots? Why do we cry? Does alcohol really kill brain cells? It's a Question and Answer Extravaganza on this week's Naked Scientists! We find out what makes a Chameleon change colour, why birds fly into windows and how a hair can change colour along it's length. Also, witnessing the birth of stars, the Neanderthal genome and how washing your hands can change the way you think. Plus, Meera dabbles with green gadgets and smell-free toilets in the home of the future, and Dave shows you how to build a hovercraft in Kitchen Science.

Where in the world am I? We're looking at the science of the Global Positioning System, or GPS, this week. We find out how satellites can tell you your location, as well as communicate with the bossy little box that tells you which way to drive. We discover the potential for "spoofing" GPS with a false location, and how this might be the future of cyber-terrorism as well as explore the cosmic reference frame that the satellites themselves rely on. In Kitchen Science, we get back to basics and locate ourselves using a map and compass! Plus, the first amphibian genome helps to fill the vertebrate family tree, we meet the colourful fish that shine a light on evolution and find out how a technique developed to study eye disease can help find art forgeries.