Covers: Pre-Science (2.5 Million Years Ago - 799 C.E.); The European & Islamic Renaissances (800 C.E. - 1542); The Age of Discovery (1543-1788); The Age of Revolution (1789-1894); The Atomic Age (1895-1945); The Information Age (1946-2013) -- Also covers Physics, Chemistry, Biology, Astronomy & Space, Math. & Earth Science