Naked Scientists Podcast

Naked Scientists episode

Sun, 30th Mar 2008

Tuberculosis and Magnetic Bacteria

Tuberculosis bacteria (c) Janice Carr

This week we visit the Historic city of Edinburgh to put Scottish science under the microscope!  We discover the incredible magnetic bacteria and find out how their bio-nano-magnets could help treat cancer.  We find out how satellite images can help predict outbreaks of cholera, and talk about the twist in the tale of TB - drug resistant Tuberculosis has now been found in the UK, so what is this disease and how can we hope to treat it?  Also, how scientists have used cloned stem cells to treat Parkinson's disease in mice, how a whiff of anaesthetic could sooth traumatic memories and why bonobo apes play it safe while chimps like to gamble.  Plus, in Kitchen Science we find out how yeast makes fluffy bread and fizzy beer!

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In this edition of Naked Scientists

Full Transcript

  • 14:33 - Great Ape Gambles

    If you had the choice between a guaranteed reward or taking a risk, what would you go for? Most people will choose the guaranteed reward. But what about our closest relatives, the great apes?

  • 22:20 - Fizzy Yeast

    Find out what makes bread rise and champagne fizzy in this simple kitchen science.

  • 26:35 - Magnets from Microbes

    Some bacteria live inside us, some live in freezing cold environments, others near the blistering heat of volcanoes in deep sea vents. You may not have known that some bacteria actually manufacture their own little magnets. Scientists are trying to find out exactly what they use...

  • 38:52 - The Twist in the Tale of Tuberculosis

    TB has been virtually eradicated from the UK and a whole generation have had hardly any contact from it so itís easy for us to forget what a disparaging and serious problem it was for us in the past. A serious killer disease, but now weíre seeing something of a resurgence and no...

  • 46:02 - Vocal Accent While Singing

    My question is about accents. Iíve noticed that many people when they speak in a language that is not their native tongue have strong accents. However, when they try to sing a song in the same language their accent seem to diminish. There are exceptions for this but it seems t...

  • 54:50 - Why is illness worse at the end of the day?

    Whenever I feel ill, I feel a lot better during the day and then my symptoms get a lot worse just before I go to bed. I feel like Iím getting over it and then at the end of the day I feel ill again. Why does this happen?

  • 55:27 - Do humans navigate with tiny magnets?

    My sense of directionís absolutely appalling and Iím wondering about the deposits of iron in the brain. In the same way that bacteria make these miniature magnets we know other animals, including possibly us, also have them. How do they contribute to us having a sense of directio...

  • 56:15 - Can mosquitoes transmit HIV?

    When you get HIV and AIDS in somebody, say in Africa, if they then get bitten by a mosquito can the next person that mosquito bites actually get the disease?

  • How fast does my toothbrush vibrate?

    I wanted measure how fast my sonic toothbrush actually brushes so I used a sound recorder to measure the sound it makes. I then looked at the waveform that the computer can show up to show how many oscillations per second. I counted 25 per tenth of a second which is only 15,000 c...



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