President Obama has said he will veto the Keystone XL pipeline project, which passed in the Senate on Wednesday. Historically, political scientists say, 90 percent of veto threats are issued behind the scenes, but Obama has issued nine veto threats so far — in public. Mandel Ngan/AFP/Getty Images hide caption

Augustine Goba (right) heads the laboratory at Kenema Government Hospital in Sierra Leone. He and colleagues analyzed the viral genetics in blood samples from 78 Ebola patients early in the epidemic. Stephen Gire/AP hide caption

The Vatican Bank is "essentially an offshore bank in the middle of a foreign country," says Gerald Posner. Above is an aerial view of St. Peter's basilica in Vatican City. AFP/AFP/Getty Images hide caption

Bill Parcells has been coach to the Dallas Cowboys, the New York Giants, the New England Patriots and the New York Jets. Robert B. Stanton/Getty Images hide caption

Ideally, we'd all eat super healthful diets. But that's not the world we live in, and multivitamins may help bridge the nutritional gaps. Jasper White/Getty Images hide caption

Wendell Scott's son Frank Scott (left) and grandson Warrick Scott at StoryCorps in Danville, Va. Wendell Scott, who died in 1990, was one of the first African-American NASCAR drivers to win a race at the elite level. StoryCorps hide caption

Russian tourists typically flock to the luxury ski resort of Megeve in the French Alps, but the weak ruble has kept them away this year. Jean-Pierre Clatot/AFP/Getty Images hide caption