Plus, how technology is changing what we know about Stonehenge

The annual Royal Society Summer Science Exhibition wrapped up last week. On last week's podcast we looked at one of its featured topics – quantum computing. This week we're picking up three other themes from the exhibition.

Can science help us produce meat in a sustainable way? Ian Sample is joined in the studio by Professor Michael Lee, head of Rothamsted Research's North Wyke Site, and by the Guardian's science correspondent Hannah Devlin, to find out.

What role can new optical technology can play in our everyday lives? Simon Hall, lead scientist for adaptive optics at the National Physical Laboratory, explains.

Technology is enabling us to create highly detailed digital maps of monuments beneath the soil surrounding Stonehenge. Professor Vince Gaffney, head of the Stonehenge Hidden Landscapes Project at Birmingham University, tells us how his team is creating the most detailed maps so far of Stonehenge and the landscape around it.

And Nicola Davis, commissioning editor of Observer Tech Monthly, reveals what's coming up in this month's issue.