United Press International: Americans are using higher fuel costs as a reason to boost conservation efforts even as they support increased oil drilling, a poll indicates. An ABC News/Planet Green/Stanford University poll reported mixed responses. But 71 percent of those surveyed said they were trying to reduce their “carbon footprint” by driving less, using less electricity and recycling, ABC News reported Saturday. However, 64 percent of the respondents cited “finding new energy sources” as more …