Proponents of the terminal plan say it would bring economic development to the Vancouver area, just across the Columbia River from Portland, Ore. Conrad Wilson/OPB News hide caption

itoggle caption Conrad Wilson/OPB News

Workers stand next to a gas pipeline not far from the central Ukrainian city of Poltava in June 2014. Ukraine imports much of its gas from Russia, which is once again threatening to cut off supplies in a dispute over payments. Sergei Supinsky/AFP/Getty Images hide caption

itoggle caption Sergei Supinsky/AFP/Getty Images

Miller Farm, the terminus of Van Syckel's pipeline, in 1868. The oil was pumped to Miller Farm and then transported by railroad. Drake Well Museum/Courtesy of PHMC hide caption

itoggle caption Drake Well Museum/Courtesy of PHMC

Drilling rigs dot the landscape near Calumet, Okla., in April 2013. Oklahoma's economy blossomed during the domestic fracking boom, but as the price of crude oil drops, that could change. Sue Ogrocki/AP hide caption

itoggle caption Sue Ogrocki/AP

An oil well in Garden City, Texas. With prices plunging, oil companies are laying off thousands of workers. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images

Without horsepower, they rely on human power: Mother and daughter-in-law Sheela and Sunita Devi shred sugarcane into feed. Ibrahim Malik for NPR hide caption

itoggle caption Ibrahim Malik for NPR