I've been chosen as Science Guest of Honour at Worldcon 75.
This is a major honour, and I'm looking forward to the convention.
Many thanks to the organisers for giving me this opportunity.
Guests of Honour are JohnHenri Holmberg , Nalo Hopkinson, Johanna Sinisalo,
Claire Wendling, and Walter Jon Williams.
This is a major honour, and I'm looking forward to the convention.
Many thanks to the organisers for giving me this opportunity.
Guests of Honour are JohnHenri Holmberg , Nalo Hopkinson, Johanna Sinisalo,
Claire Wendling, and Walter Jon Williams.
Now available in paperback as well as kindle eBook.
Who were the mysterious PAXIAL? What were the enigmatic prisms that they left on a thousand worlds? Billy the Joat needs to find out, because the PAXIAL prisms are the key to finding his father, who disappeared on a covert mission when the Joat was a child. His taste for practical jokes keeps getting him into trouble with authority; his ability to solve impossible problems for the Quaternity, a shaky political alliance of Humans, Grynth, Barasshanti and Femm, keeps getting him out of it. His investigations home in on the Etonians, an enormously powerful human family—especially the beautiful Sherryl Eton, with the face of an angel and the smile of a king cobra. The quest leads the Joat deep into Sharraby Breach, a forbidden region of distorted spacetime... and what he finds there threatens not just his own future, but that of the entire human race. 
New edition of What Shape is a Snowflake?
with updated text and many new images Think of a zebra’s stripes, the complexities of a spider’s web, the uniformity of desert dunes, or the spirals in a sunflower head … think of a snowflake. The Beauty of Numbers in Nature shows how life on Earth follows the principles of mathematics. Starting with the simplest patterns, each chapter looks at a different kind of patterning system and the mathematics that underlies it. In doing so the book uncovers some universal patterns, both in nature and manmade, from the basic geometry of ancient Greece to visually startling fractals. Elegantly illustrated, The Beauty of Numbers in Nature is an illuminating and engaging vision of how the apparently cold laws of mathematics find expression in the beauty of nature.

NOW IN PRINT and Kindle eBook
Infinity has connections to religion, philosophy, metaphysics, logic, physics, and mathematics. The infinitely large is intimately related to the infinitely small (infinitesimal). Cosmologists wonder whether space and time are infinite. Philosophers and mathematicians from Zeno to Russell have posed numerous paradoxes about infinity and infinitesimals. Infinity is a concept with important practical applications. Mathematicians use infinity and infinitesimals to answer questions or supply techniques that do not appear to involve the infinite. 
BREAKING NEWS
How the lizard got its spots Yves Meyer awarded 2017 Abel Prize Gaussian correlation inequality Seismology proof found New maths gallery at museum Boolean Pythagorean triples Elliptic curves and banking security Where the brain stores words Dynamics from noisy data The chameleon's tongue The real butterfly effect 8 and 24dimensional sphere packing How snakes slither 
Awarded to me for In Pursuit of the Unknown: 17 Equations That Changed the World, and to Tim Chartier for When Life is Linear: From Computer Graphics to Bracketology.

Science fiction novel written with Jack Cohen.
eBook now available from ReAnimus Press. Paperback and eBook from amazon. A (slightly) revised edition of the 2000 novel. In the year 2270, with travel to the nearby planets well established, a bizarre discovery is made on Callisto, the eighth moon of Jupiter. Dozens upon dozens of strange wheeled artifacts—wheelers—are found buried beneath the icy surface. No one knows what they were used for and who left them in our solar system. At the same time, it is discovered that the moons of Jupiter have moved from their ageold positions. A quickly formed expedition finds that Jupiter is inhabited by a race of balloonlike aliens, who defend their world against comet strikes by moving their moons using gravitational technology. This time, though, their redirection is aiming an incoming comet directly at Earth! Communication at first proves impossible, but an Earth child who has an intuitive understanding of animal behavior becomes the key to contacting them—and joining forces with them to save the world. 
Science fiction novel written with Tim Poston.
eBook now available from ReAnimus Press. Paperback and eBook from amazon. Sam, Jane, Felix, Elzabet (Lady Elzabet of Quynt), Tinka, and Marco have just been brought together — a mismatched bunch overqualified and highlyskilled trainees from all corners of the Concordat, assembled on a small moon, taking their first steps toward Starhome and qualification as galactic citizens. If they survive. Their first training mission: An extended voyage to the boondocks, out in space where all they can damage is themselves (and a very expensive Da Silva starship). Everything starts out normally, quantum jumping through spacetime congruences as the Da Silva drive does... until it's very much not normal, and they find themselves in a very strange place indeed. As they explore their new environment, they become aware of a dramatic secret which, if they can report it to the Concordat, will change everything...
Living Labyrinth wrings out every angle of a plausible scientific idea all inside a great story. For MORE, and a spoiler warning, visit the book's website, where you will find maps, history, ecology, games, a Galactic gazetteer, details of the complications of interstellar travel, and much else. [Website is still at beta stage and subject to further revision.] NOW IN PRODUCTION: The sequel, Rock Star. 
THE FOURTH LAW OF HUMANICS
New SF story in Nature's "Futures" section. PLUS a blog on the thinking behind it. 
New from Profile
An uptotheminute guide to the cosmos. The formation of the Earth and its Moon, the planets and asteroids of the solar system, the Galaxy and the universe. Describes the architecture of space and time, dark matter and dark energy, how galaxies, stars and planets form, why stars implode, how everything began, and how it’s all going to end. Parallel universes, finetuning of the cosmos for life, what forms alien life might take, and the likelihood of life on Earth being snuffed out by an asteroid. Explains the fundamentals of gravity, relativity, quantum theory, and how they relate to each other.

Mathematics has been the driving force in astronomy and cosmology since the ancient
Babylonians. Kepler’s work on the orbits of the planets led Newton to formulate his theory of gravity. Two centuries later tiny irregularities in the motion of Mars inspired Einstein to devise his theory of General Relativity. Eighty years ago ago the discovery that the universe is expanding led to the Big Bang theory of its origins. This in turn led cosmologists to add new features, such as inflation, dark matter, and dark energy. But does inflation explain the structure of today’s universe? Does dark matter exist? Could a scientific revolution be on the way that will challenge the longheld scientific orthodoxy and once again transform our understanding of the universe? 
AUTHOR PAGE ON AMAZON
Books, photos, twitter feed, and more 
MANIFOLD magazine
All twenty issues of this cult student mathematical fanzine from the 1960s and 70s are now free online on this site. 