By David W. Anthony
By Michael H C Baker
By Kevin McCormack
By Galileo Galilei, Albert Van Helden
By Susan Clark
By David McCullough
By David S. Landes
By Fred Dibnah, David Hall
By Peter Randall
By Ian Allan
By Ivan Berg
By Baynton-williams, Ashley, Miles
By Yasha Levine
By Malcolm Gladwell
By Jorg Meidenbauer
By Matthew H Edney
By Julian Holland
By George Dyson
By Don Middleton
By Vaclav Smil
By Richard Morris
By I. Bernard Cohen (Harvard University)
By David C. Cassidy
By Jeffrey Quill
By David Watkins, John Wilson