Ian Stewart

Roundworld, aka Earth, is under siege. Are three wizards and an orangutan Librarian enough to thwart the Elvish threat? When the wizards of Unseen University first created Roundworld, they were so concerned with discovering the rules of this new universe that they overlooked its inhabitants...

In Significant Figures, acclaimed mathematician Ian Stewart introduces the visionaries of mathematics throughout history....

The wizards discover to their cost that it’s no easy task to change history. Roundworld is in trouble again, and this time it looks fatal. Having created it in the first place, the wizards of Unseen University feel vaguely responsible for its safety. They know the creatures that lived there...

In Calculating the Cosmos, Ian Stewart presents an exhilarating guide to the cosmos, from our solar system to the entire universe. He describes the architecture of space and time....

Not just another science audiobook and not just another Discworld novella, The Science of Discworld is a creative, mind-bending mash-up of fiction and fact, that offers a wizard’s-eye view of our world that will forever change how you look at the universe. Can Unseen University’s eccentric...

See the world in a completely new way as an esteemed mathematician shows how math powers the world—from technology to health care and beyond. Almost all of us have sat in a math class, wondering when we'd ever need to know how to find the roots of a polynomial or graph imaginary numbers. And...

Mathematician Ian Stewart tells listeners what he wishes he had known when he was a student....