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And that is the same physics, medicine, nature, or space, time, the brain, life, the universe.

This week we talk to the scientists growing new brain cells

for people with Parkinson's disease

and the man creating human organs in a test tube.

Plus, evidence that antibiotics in pregnancy might affect the behavior of a baby,

why air travel is destined to become bumpier in the future and is it true that it only

takes one hit with heroin to get hooked? Hello I'm Chris Smith and this is The Naked Scientists.

The Naked Scientists Podcast is powered by UKfast.co.uk.

Pinicillin has saved millions of lives since its antibacterial properties were first

realized in patients more than 75 years ago. Now literally thousands of

tons of antibiotics like penicillin get used every year around the world.

But could there be consequences for a developing baby's brain if its mother takes antibiotics during her pregnancy.

New research from Canada carried out on mice

suggests that taking antibiotics changes the spectrum of bugs in the mothers

and subsequently the infants's intestines.

This, John Beanenstock says, affects brain chemistry and the behavior of the infant after

it's born.

We postulated an antibiotic might change the balance of bacteria in the gut.

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