STEM Chronology " The History of Science, Technology, Engineering, and Mathematics is a chronological history of those topics (and medicine) from 3,400,000 BCE to 2017 CE in the form of individual entries for events. It also includes some 200 short biographies and 180 brief essays on topics that need more than a short entry. The book is the descendant of earlier chronologies by Bryan Bunch with Alexander Hellemans, The History of Science and Technology (2003), The Timetables of Technology 1993), and The Timetables of Science (1991 and 1988). Bryan Bunch is the author of more than 20 books for the general reader in science and technology history, current science and medicine, mathematics, and textbooks in science and mathematics.