Washington Post: Steven Chu, the Nobel Prize-winning physicist who is President Obama’s energy secretary, recently gave a speech in which two key words never passed his lips. He talked about energy efficiency, electricity transmission lines and renewable energy sources. He waxed eloquent about technology and the need to fund energy research. But afterward, Chevron vice chairman Peter Robertson noted disconsolately that "it would be nice to hear a bit about oil and gas." Oil and natural gas, however, …