Here in the Southern half of the universe it's coming up to spring - and you know what that means: lambs frolicking in meadows, teenagers frolicking in meadows, people with hay fever sneezing!

To celebrate the oncoming season of the sneeze, we explore the world of pollen with ThatPollenGuy, Professor Simon Haberle - we talk ancient roadways, 3d printing, huge sneezes and excellent pollen collections!

The Wholesome Show is Dr Rod Lamberts and Dr Will Grant, proudly brought to you by the Australian National Centre for the Public Awareness of Science!