National Geographic: Last Monday night, when environmentalist activists staged 280 candlelight vigils in 49 states to protest the proposed Keystone XL pipeline-in Washington, D.C., demonstrators inflated a giant black tube in front of the White House-many no doubt wondered if their long campaign to halt the project had reached a turning point.
"When I saw the photos coming in from the vigils happening all over the country, I looked at my husband and said, 'We have a real movement here,'" said Jane Klebb, who runs...