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T.S.B. proud partners of the Pride of Britain Awards. You're going to. Hello, scientists with me Chris Smith and also with Hannah Crichlo hello

Hannah hello and this week the insects that have gears in their legs to help them jump

straight there's also the discovery that television soap operas are altering how people speak.

And electrifying your mind, we're going to be delving into the workings of the brain to find

out why chili is hot, mints taste cold and how light can be used to control nerve cells.

And with that in mind, we've got a question for you. We'd like you to try and estimate how many megabytes of memory and you can use

other units as well if you want a human brain has and as always we'd love you to

join in with the discussion so if you would like to put any questions to us this week or next

week you can send them in now you can tweet at naked scientists or email Chris at

the naked scientists dot com. First let's take a look at what's been making the science headlines this week.

Chris what have you got for us? Well there's a really

interesting paper that's come out this week, Hannah, which is something of a

landmark actually in the world of stem cells. Scientists in Spain have

managed to produce in situ stem cells.

Previously, when we wanted to make stem cells by reprogramming a specialized adult cell

to become what we call an undifferentiated or unspecialized

...