Mark Denny was born in Yorkshire, England, in 1953. He obtained a Ph.D. in theoretical physics from Edinburgh University, Scotland, and spent twenty years working as a radar and sonar systems engineer in the aerospace industry. He began writing popular science books in 2005. "I was emailed one day, out of the blue, by the editor-in-chief at Johns Hopkins University Press who had read some of my papers, and who thought they would make an interesting popular science book. I haven't looked back--explaining science, in a way that non-scientists can appreciate, is what I do." Mark lives on Vancouver Island with his wife, Jane, and spents his time writing, birding, and homebrewing beer. More details about Mark's books can be found on his website: www.markdenny.shawwebspace.ca.