US Energy Secretary Chu uses resignation to fight on

摘要

Washington-Energy Secretary Steven Chu, ever the crusader against climate change, used his lengthy resignation memo on Febru- ary 1 to exhort his colleagues to continue the battle to lower greenhouse-gas emissions-by weaning the country off its "addiction" to oil and supporting innovation in science. His advocacy for the cause-and the Ener- gy Department's billions of dollars in invest- ments in clean-energy technologies-are likely to be his biggest legacy as energy secretary, a post he leaves after four sometimes tumul- tuous years.