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Science and that is

and that is to say physics, medicine, nature, or

time, brain, life, the universe.

This week, we're delving into physics in a galaxy far, far away.

And if that's not a big enough giveaway, we are of course probing the science of

Star Wars. Plus in the news, evidence that London Air is stunting the growth of

developing babies and scientists use AI to decode what

dolphins are saying. I'm Katie Halea. I'm Chris Smith and this is the naked

scientist. The Naked Scientists podcast is powered by UKfast.co.uk.

First up this week, air pollution from road traffic in London is adversely affecting

fetal growth and leading to low birth weight. That's the conclusion of a new study that's

come out this week from scientists at Imperial College.

And what's very worrying about it is that the affected mothers were exposed during their

pregnancies to pollution levels that were only about half of what's currently set under

EU law as the safe limit for human exposure.

Leading the study was Mireay Toledano.

We took every single Singleton live birth in London during 2006-2010, 2010, that's five-year period, and that means we actually were looking

at 540,000 births, and we then estimated the residential exposure of every mother during her pregnancy

...