Dr Kate Kitagawa is one of the world's leading experts on the history of mathematics. She earned a PhD from Princeton University, taught history at Harvard University and conducted research in the UK, Germany and South Africa. Her first book was a national bestseller in Japan, and she has been named one of the 100 most influential people in Japan by Nikkei Business. She is currently Director of the Space Education Office at the Japan Aerospace Exploration Agency (JAXA).
Dr Timothy Revell is a journalist and lapsed mathematician.
He is currently the Deputy US Editor for New Scientist and is based in New York. As a reporter and editor, he specialises in technology and mathematics, covering everything from artificial intelligence to the Abel prize. He appears regularly on WNYC's Science Friday, as well as on other podcasts and radio to talk about the latest developments in science. He has a master's degree in mathematics and a Ph.
D. in computer science. His first book was Man vs. Maths.