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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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Scientists have found a simpler and safer way to screen a pregnant woman's baby for Down's and other similar genetic disorders...
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The pregnancy tests for things like Down syndrome: how early into pregnancy can you do that test?
An experiment you can carry out using a cup of tea and a little milk
What about hormones including those that create nose hair? Do they also contribute to baldness, is it all one and the same thing?
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?
Assuming there's no wind resistance and you had a gun powerful enough, could you shoot a bullet straight up and hit a satellite which is in stationary orbit?
Could the credit crunch be due to traders' hormone levels? Meera speaks to John Coates to find out...
Is the Earth getting heavier? As the human population grows, are we putting on weight as a planet?
What keeps the Earth's core so hot?
How high above ground level can bees fly?
I want to bake a Christmas cake. If I use some kind of thermocouple, in other words a temperature measuring device in the cake, is there a temperature inside the 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?
Are soaps and sanitisers breeding superbugs as well as antibiotics?
Why do songs sound better the more we listen to them?
Are green potatoes poisonous or is this a myth?
Are hot air hand dryers an infection risk?
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
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