Resumen de 50, 100 & 150 Years Ago.
This article presents excerpts from articles in "Scientific American" issues dating back 50, 100 and 150 years ago from September 2006. Excerpts from the September 1956 issue discuss the evolutionary universe and steady-state universe theories, an excerpt from a September 1906 article deals with Captain Robert F. Scott and his Antarctic expedition, and an excerpt from a September 1856 article comments on Lorenz Oken's "Vestiges of Creation."
