I'm a freelance writer and broadcaster specializing in science stories, with a particular focus on physics, astronomy, and cosmology. My latest book, In Search of Time, was published last fall by McClelland & Stewart in Canada, by St. Martin's Press in the U.S., and in by National Maritime Museum Publishing in the U.K. My previous book, Universe on a T-Shirt, won several awards and has been translated into French, Portuguese, and Hebrew.

My writing credits include the Globe and Mail, the Toronto Star, The Walrus, the Boston Globe, the Independent (U.K.), COSMOS, Astronomy, Sky & Telescope, Sky News, Nature, New Scientist, and Cottage Life and many other newspapers and magazines. I've also been a frequent contributor to the CBC Radio programs Ideas (where I've made nine major documentaries) and Quirks and Quarks, as well as Radio Netherlands and the Australian Broadcasting Corporation.

I have also taught a class called "Our Place in the Cosmos" at the University of Toronto School of Continuing Studies.

I'm also an avid amateur photographer. Some of my work (including science-related images and some astrophotography) can be seen in the photo gallery as well as on my Flickr site.

I live in Toronto, Canada.

I can be reached at dan@danfalk.ca.