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12th Oct 2008

Your Questions and Answers


Dave Ansell

Kat Arney

Chris Smith

New techniques to test for Down's Syndrome and oesophageal cancer feature in this week's Naked Scientists, along with the nanotechnology that may let you climb walls like spider man!  We also take on your science questions and find out if it's possible to shoot a satellite, what keeps the Earth's core so hot, and how you can pass through fire unharmed!  Plus, in a back-to-basics Kitchen Science - Dave makes drops of milk bounce out of his tea!

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News

DNA answer to Down's Screening

Scientists have found a simpler and safer way to screen a pregnant woman's baby for Down's and other similar genetic disorders.  Currently the diagnosis of genetic abnormalities requires doctors to obtain samples of foetal tissue, either by drawing out amniotic fluid from around the baby and ...

Sponge on a string could detect cancer

Oesophageal cancer, cancer of the foodpipe or gullet, is a growing problem in the UK.  Not only are rates rising dramatically, but survival is often very low, mainly because the cancer isn’t spotted until a very late stage when it’s harder to treat. Now a new – but very simple – technique deve...

Gecko Glue

People have been fascinated by the ability of lizards called Geckos to chase their insect prey - not just on the ground, but up walls and even across the ceiling.  Many scientists have tried to emulate their abilities, but up until now they have not managed to achieve the same level of sti...

Giant-eater cells key to fat-diabetes link

Scientists have discovered the cellular culprit that causes obese individuals to develop diabetes. Writing in this weeks' Cell Metabolism, University of California San Diego researcher David Patsouris and his colleagues have found that an angry immune cell could be to blame.  Ironically the c...

Male baldness genes found

Good news for any of our listeners who are thinning on top – two papers in Nature Genetics this week reveal genetic variations that contribute to male pattern baldness, which affects around a third if men by the time they’re 45. It’s the classic pattern of baldness where hair starts thinning at the ...

Cylindrical Solar Cells

At the moment, whilst solar cells are clean and environmentally friendly, the electricity they produce is still 3-4 times more expensive than electricity produced from fossil fuels such as coal.  Part of the problem is their high captial cost of manufacture, but a less well known problem is the...


Kitchen Science

Part 1 Part 2 Listen
...or download as MP3 [1] [2]

Rebounding Drop

An experiment you can carry out using a cup of tea and a little milk


QotW

Why do songs sound better the more we listen to them?

Even songs that inspire hatred at first listen can grow on us over time, so why do songs sound better the more we listen to them?


Interviews

Hormones and the Money Markets

Could the credit crunch be due to traders' hormone levels? Meera speaks to John Coates to find out...

Sunday Driver - In the City of Dreadful Night

Our very own Kat Arney treats us to a sneak preview of the new album, 'In the City of Dreadful Night', released by Kat's band - Sunday Driver


Questions

How early in a pregnancy can you test for Down's?


Do the hormones that increase nose hair cause baldness?


Does lightning go from cloud to the Earth or Earth to the cloud?


How does a one-way mirror work?


How many times can an image be reflected between two facing mirrors?


Why can a finger be passed through a flame and not burn?


Can you shoot down a satellite?


Is the Earth getting heavier?


What keeps the Earth's core so hot?


How high above ground level can bees fly?


Is there a temperature inside a cake at which it ought to be cooked?


If they test atomic bombs again could it throw the Earth off its axis?


What happens when a mild chilli plant gets pollinated with hot chilli pollen?


Could a magnifying glass lose its power?


Part 1 Part 2 Listen
...or download as MP3 [1] [2]

Are soaps and sanitisers breeding superbugs as well as antibiotics?


Are green potatoes poisonous or is this a myth?


Are hot air hand dryers an infection risk?






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