Protesters try to scale an apartment building to put out a fire that began when a tear gas canister was thrown into the building during clashes between police and protesters, near the Interior Ministry in Cairo, Egypt. (Reuters)

Dr. Fauzia Siddiqui, sister of U.S.-trained Pakistani scientist Aafia Siddiqui, who was convicted in September 2010 of trying to kill U.S. agents and military officers in Afghanistan, addresses protesters to condemn her sister's continued detention, Karachi, Pakistan. (AP)

An Indian disaster response worker and others gather around derailed cars of a passenger train following an accident at Sathi Sarapa village near Gauhati. (AP)

A Bahraini anti-government protester carries the national flag as she walks by a wall at the end of a rally and march that drew tens of thousands to Manama. (AP)

The Vince Lombardi Trophy is shown between New England Patriots and New York Giants helmets at the head coaches press conference before the Super Bowl XLVI NFL football game in Indianapolis, Indiana. (Reuters)

Small frozen air bubbles are trapped in the surface of a frozen lake after the temperature dropped to below freezing overnight at Hebburn, northeastern England. (AP)

A Belarussian pensioner cleans ice from a window at her house in the village of Kamenets, north of Minsk. (Reuters)

A polar bear enjoys the fresh snow in the zoo in Berlin, Germany. (AP)