Environmentalist Environmentalists, citing greenhouse gas emissions and risks of oil spills, including climatologist James Hansen are arrested outside the White House in Washington D.C. in a protest to urge President Barack Obama to reject TransCanada Corp.'s $7 billion proposed Keystone Pipeline extension from the Athabasca Oil Sands in northern Alberta in Canada to the US Gulf Coast. Sources: AP via ''Sydney Morning Herald Bloomberg NPR The Nation The New York Times