National Geographic: Back in September 2008, when a Canadian company first sought U.S. approval to build the Keystone XL pipeline, the United States was the world's third largest oil producer and crude oil prices hovered around $105 per barrel.
At that time, Apple was selling the iPhone3, Britney Spears won an MTV award, and George W. Bush was president.
Today, in Barack Obama's second term in the White House, Calgary-based TransCanada is still seeking the go-ahead for the northern leg of its controversial Canada-to-U.S....