An AP analysis and a Pew Research Center poll found in October find.
The Pew Research Center is a nonpartisan "fact tank" based in Washington, DC, that provides information on the issues, attitudes and trends shaping the USA and the world.
An oil refinery, Shell at Martinez, California. The tapering vertical elements are smokestacks to create draft for heating units. Most of the complex vertical units are fractionating towers. Others are flares.