上游充通大兽 SHANGHAI JIAO TONG UNIVERSITY Evolution of Energy Sources Mid 21st Century Late 20th ☐Animal Century ☐Biomass ■Coal Early 20th ■0il Century Natural Gas Mid 19th ☐Nuclear Century ■Hydrogen 15th Century 0% 20% 40% 60% 80% 100% Copyright1998-2007,Dr.Jean-Paul Rodrigue,Dept.of Economics&Geography,Hofstra University.For personal or classroom use ONLY.This material (including graphics)is not public domain and cannot be published,in whole or in part. in ANY form(printed or electronic)and on any media without consent.This includes conference presentations.Permission MUST be requested prior to use.Copyright © 1998-2007, Dr. Jean-Paul Rodrigue, Dept. of Economics & Geography, Hofstra University. For personal or classroom use ONLY. This material (including graphics) is not public domain and cannot be published, in whole or in part, in ANY form (printed or electronic) and on any media without consent. This includes conference presentations. Permission MUST be requested prior to use. Evolution of Energy Sources