John W Farrell is a writer and producer working in Boston. He is the author most recently of The Clock and the Camshaft just out from Prometheus Books, as well as The Day Without Yesterday: Lemaître, Einstein, and the Birth of Modern Cosmology from Basic Books. A graduate of Harvard College with a B.A. in English and American Literature, Farrell has written for Aeon, Commonweal, Cosmos Magazine, New Scientist, The Wall Street Journal, The Guardian, The Boston Globe, Salon, National Review, Nautilus, and The Tablet of London. He was a 2010 Templeton-Cambridge Journalism Fellow in Science and Religion. His latest book, The Clock and the Camshaft, and Other Medieval Inventions We Still Can't Live Without has just been published by Prometheus Books.