Lasers in Medicine
The role of lasers in biomedicine goes under the spotlight this week as we explore the workings of photodynamic cancer therapy, find out how laser tweezers can be used to force-feed bugs to white blood cells and hear how a new technique uses laser-powered DNA nanoswitches to spot specific genes. Also, why the proton just got smaller, prompting a reevaluation of some trusted laws of physics, how antidepressants in seawater can make shrimps swim towards danger and a novel mechanism for natural selection - beneficial bacteria! Plus, in Kitchen Science, what the patterns produced by laser light... Like this podcast? Please help us by supporting the Naked Scientists
10 Heinä 201058min
How do you Weigh a Volcano?
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! Like this podcast? Please help us by supporting the Naked Scientists
3 Heinä 201057min
What's the point of eyebrows?
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! Like this podcast? Please help us by supporting the Naked Scientists
26 Kesä 20101h 6min
Seriously Small Structures
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. Like this podcast? Please help us by supporting the Naked Scientists
19 Kesä 201058min
50 years of Lasers
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... Like this podcast? Please help us by supporting the Naked Scientists
12 Kesä 20101h
Creatures in Colonies
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... Like this podcast? Please help us by supporting the Naked Scientists
5 Kesä 201056min
Do Bacteria Grow on Bars of Soap?
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... Like this podcast? Please help us by supporting the Naked Scientists
29 Touko 20101h 7min
Transmissible Tumours
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. Like this podcast? Please help us by supporting the Naked Scientists
21 Touko 201057min
