24 hours in pictures

Delhi, India: A homeless man sleeps next to a stray dog on a central reservation of a main road
Photograph: Rajesh Kumar Singh/AP

Rio de Janeiro, Brazil: Members of the Mocidade samba school prepare for their carnival performance at the Sambadrome
Photograph: Ricardo Moraes/Reuters

Galaxidi, Greece: Revellers take part in a flour fight, a tradition marking the end of the carnival season and the start of Lent
Photograph: Yiorgos Karahalis/Reuters

Panama City, Panama: People perform a lion dance during celebrations to mark Chinese New Year
Photograph: Arnulfo Franco/AP

Bangkok, Thailand: A pigeon-catcher rounds up birds during a clean-up operation
Photograph: Sakchai Lalit/AP

Ahmedabad, India: Firefighters battle a blaze at a pharmaceuticals warehouse
Photograph: Sam Panthaky/AFP/Getty Images

Alexandria, Virginia, USA: A George Washington impersonator demonstrates a proper 'Virginia bow' to a young tourist
Photograph: Mike Theiler/EPA

Marjah, Afghanistan: US soldiers take up positions in a compound during a gun battle with Taliban militants
Photograph: David Guttenfelder/AP

Panama City, Panama: Drummers take part in carnival celebrations
Photograph: Arnulfo Franco/AP

Managua, Nicaragua: People carry scrap metal from the ruins of a building damaged by a 1972 earthquake near the shores of Lake Xolotlan
Photograph: Oswaldo Rivas/Reuters

Beijing, China: Acrobats perform during celebrations to mark Chinese New Year
Photograph: Christina Hu/Reuters

Bishkek, Kyrgyzstan: A homeless man drinks out of a mug bearing the image of a $100 bill
Photograph: Vladimir Pirogov/Reuters