Watch: Aftermath of attack on Hamas leader

Two men attacked another man near a London military barracks in what British authorities were investigating as a possible terror act. Lucy McDonald reports.

Warning: graphic video. A man with bloodied hands and knives appears in amateur video that shows the immediate aftermath of an attack in southeast London in which a man was killed.

The Popocatepetl volcano near Mexico City continued to show signs of seismic activity last week. Increased explosive activity could lead to increasingly powerful explosions of ash and lava.

A new racing fad in Saudi Arabia has drivers "sidewalk skiing" on two wheels while people cling to the outside of the moving vehicle.

To mark the final day of festivities for the re-opening of the Red Cross Museum in Geneva, Switzerland, pianist Alain Roche was lifted into the air by a crane and played to onlookers below.

Flash Points: CBS News national security correspondent Bob Orr discusses the war on terror with CBS senior national security analyst Juan Zarate, who explains why, after more than a decade of counterterrorism efforts by the American government, new threats are popping up in new places, making the environment "more complicated, perhaps in some ways more localized, but also more dangerous."