Episode description

Dr Chris Smith and the Naked Scientist team discover:

Why we need stricter smoking and vaping controls and will they work?

The remains of what’s believed to be the largest reptile to have roamed our Severn Seas.

A tribute to the BA pilot who saved his air passengers from a volcanic ash cloud – so why are volcanoes so disastrous for jet engines?

Finally, a look at how food production will cope with climate change in the future.