New research suggests the answer may lie inside - you! Little creatures called hic’hikers, no bigger than the eyelash of a ladybug who love to climb, may be the reason.
How do we stop them?
Read on to learn more
Katie Jurkiewicz and Ryan Yaconiello have been writing stories for children for over ten years and are the authors of the upcoming The Monster Book. Katie is also a designer and painter.
Pottermore has now launched the Wizarding World Book Club. Visit Pottermore to sign up and join weekly Twitter discussions at WW Book Club.