Authorities say the Tsarnaev brothers are seen on video and photo images near the finish line depositing bomb-laden backpacks that then detonated, killing three people and injuring more than 260.

WSJ: Boston Suspect Left Note in Boat

The species was hunted to the verge of extinction before a ban was introduced in the 1960s - before then, people were rewarded for killing wolves.

BBC: Sweden wolf hunt suspended after legal challenge

As rumors swirled that a mysterious pneumonia was killing people in Beijing, Li, then a postgraduate student, dismissed the fears as overblown because he saw footage on state television of seemingly carefree foreign tourists arriving in the country's capital.

NPR: China's Bird Flu Response Shows New Openness

Another 12 people were killed and 31 were wounded when a roadside bomb and then a car bomb exploded near a market, killing 10 people and wounding 25, police said.

NPR: Evening Bomb Blasts Kill 30 In Baghdad

Bankers made a killing on the housing market in the 2000s and then left working people holding the bill when the market crashed, with taxpayer-funded bank bailouts and budget cuts to public services.

CNN: Why we protest education cuts

Last year, three French paratroopers were killed by a man police described as a French-born Islamic extremist who then went on to strike a Jewish school in the south of France, killing four more people.

NPR: French Soldier Stabbed In Throat Outside Paris