Super-sized dancing insects fill the air as Rio de Janeiro's vast carnival takes to the streets.
President Bush marked the 275th anniversary of George Washington's birth at Mount Vernon, Virginia - and posed with an actor playing the first US president.
Meanwhile other parts of the US were covered in snow.
After yet another bombing in Iraq, an old man examines the wreckage left behind.
It's an urban jungle on Milan's catwalks during the European fashion capital's celebrated fashion week.
Fireworks light up Hong Kong's Victoria Harbour as the territory celebrates the start of the Chinese lunar New Year.