Come and literally grub in the filth, as we discover the earthworms. Tom chats with Anna de la Vega, founder of The Urban Worm, about the crucial work that our wriggling pals, the earthworms, perform within the soil. We discover the etymology of worm, examine their behaviour on rainy days, and discover the complexities of earthworms which are not often readily apparent. If you want to learn more about worm farming, or if you want to #wormup then you can go to www.theurbanworm.co.uk for information and to apply for a 100g pack of tiger worms for your own worm farm.