2007 Series

The Naked Scientists: Science Radio & Science Podcasts

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5th Aug 2007

Venoms and Toxins - Nature's Chemical Arsenal


Chris Smith

Kat Arney

This week, mind reading children, scientists find a new gene in the lung cancer cocktail, and satnav or map-nav - what's greener? Plus we become biological weapons inspectors and explore nature's arsenal of venoms, poisons and toxins, including a scorpion's sting that can highlight cancer, how funnel web spiders are helping farmers fight off insect pests, the marine cone snail that harbours a painkiller ten thousand times more powerful than morphine, and how a snake bite can help to prevent a heart attack. Meanwhile, in Kitchen Science, Ben samples a more everyday toxin - by making stinging nettle tea.

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Interviews

Scorpion's Sting Help Fight Cancer

Jim Olsen and his team from the Fred Hutchinson Cancer Research Centre in Seattle have found a way to use scorpion venom to make a ‘paint’ which shows up cancer cells. This means that surgeons can be more certain that they are taking out an entire tumour, which can limit the damage to healthy tissu...

Science Update - Sea Levels and Foxy Foxes

This week, Susanne and Bob look into the sex lives of Arctic Foxes and the effect of melting Polar ice sheets.

Deadly Snails Kill Pain

Chris talks to Dr Bruce Livett about using the venom of cone shells to cure pain.

Snakes - Venom, Antivenom and Medicinal Uses

We spoke to Gavin Laing, of the Liverpool School of Tropical Medicne, about why snake venom is so potent, how we could use it as medicine and how to make antivenom for those who do get bitten!

Spider Venom on Apples - Natural Insecticides

Robyn Williams, from ABC Radio National's 'The Science Show' speaks to Glenn King about finding natural alternatives for insecticides - in the venom of deadly spiders!

Kitchen Science: Making Tea from Nettles

Ben finds out how to avoid being stung and make a great cup of tea at the same time.


QotW

Octopus Arm Control

How does an Octopus keep track of all eight arms? Does it have one brain for each arm?


News

Can your kids read your mind?

As a new dad, Dr Chris may feel like his baby can read his mind. And now researchers in Italy have shown that he may actually be right. One of the unique characteristics that makes us human is our ability to “mind-read”, or represent in our own heads what someone else might be thinking. Experts thi...

Satnav receives environmental thumbs up

What's best for the environment, a well thumbed map and some common sense, or a satnav? To find out, Tiawanese researchers Wen-Chen Lee and Bar-Wen Cheng from the National Yunlin University of Science and Technology recruited 32 drivers and asked them to navigate to a series of pre-determined locati...

Key gene in lung cancer cocktail

Lung cancer has a very poor survival rate, which is often due to the fact that the disease isn’t diagnosed until it has spread around the body, making treatment difficult. Now a team of researchers in the US have found that faults in a gene called LKB1 may be responsible for causing lung cancer cell...

A rash of new anti-HIV drugs

A cluster of new anti-AIDS drugs are expected to be approved for general use later this year, giving hope to patients who have developed drug-resistant forms of the virus. This is because the new agents hit different parts of the virus compared with existing anti-HIV drugs, which means that there sh...


Questions

We hear all the time about the 10s of thousands of chemicals in cigarettes, including things like formaldehyde, but why are they there? Would smoking straight tobacco be as harmful? If not, why aren’t cigarettes made that way? Is it the chemicals that smokers are addicted to or the tobacco?


What are the main components and causes of household dust?


I was wondering how they produce antibodies from venoms of snakes to make a anti-venom from it. And whether this is a long process or not.



Welcome to the forum!...
- Karen W. - 1st Oct 07

I was really fascinated with spider venom used as a natural pesticide that has to be the way to go....
- Lazy_Genius - 1st Oct 07

Although just because it is natural doesn't mean that it is going to be environmentally harmless. Each chemical should be taken on its merits whe...
- daveshorts - 1st Oct 07

yes thats true, The guy seemed a little fuzzy on how it would effect friendly species too...
- Lazy_Genius - 1st Oct 07
Whole Thread | Post Reply



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