Ali goes on a deep dive into why some sounds provoke a physiological response, and expands the 'Inside Out' universe in the process. Simon also discusses how to communicate through kilometres of solid rock.

The RPGeeks go live every Wednesday at 7pm UK time. Tune in for adventuring and our DnDebrief show (where we explore some of the real science that inspired the story ) streaming on alternate weeks.

You can watch previous episodes on our YouTube channel or listen to the show in podcast format. Don't forget to also follow us on Twitter, TikTok and Instagram for bonus bite-sized chunks of science every week! @RPGeeksDnD