D DarlingDavid Darling has a PhD in astronomy from the University of Manchester. For the past 35 years he has been a freelance science writer and is the author of nearly 50 books. Agnijo Banerjee was born in Kolkata, India, but has spent most of his life in Sotland. His extraordinary mathematical talents were recognised at an early age. In 2018 he came joint first in the International Mathematical Olympiad, recording a perfect score and affirming his status as one of the world's most outstanding young mathematicians. Read More Read Less