Jo's special guest in episode 157 is Alom Shaha, who is a science teacher, dad and writer. He returns to the podcast to talk about his latest book 'Why Don't Things Fall Up', which answers science questions like why the sky is blue and if we really are all made of stars.  Jo also welcomes back Dr Jamie Gallagher, who is a science communicator, public engagement trainer and chemist. He returns to share another story from the Periodic Table, and this time it's the heaviest element that can be made inside a star.      Presented, produced & edited by Jo Durrant. Music licensed from Purple Planet.

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