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 Photograph: Rajesh Kumar Singh/guardian.co.uk Rio de Janeiro, Brazil: Members of the Mocidade samba school prepare for their carnival performance at the Sambadrome Photograph: Ricardo Moraes/Reuters Photograph: Ricardo Moraes/guardian.co.uk 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 Photograph: Yiorgos Karahalis/guardian.co.uk Panama City, Panama: People perform a lion dance during celebrations to mark Chinese New Year Photograph: Arnulfo Franco/AP Photograph: Arnulfo Franco/guardian.co.uk Bangkok, Thailand: A pigeon-catcher rounds up birds during a clean-up operation Photograph: Sakchai Lalit/AP Photograph: Sakchai Lalit/guardian.co.uk Ahmedabad, India: Firefighters battle a blaze at a pharmaceuticals warehouse Photograph: Sam Panthaky/AFP/Getty Images Photograph: Sam Panthaky/guardian.co.uk Alexandria, Virginia, USA: A George Washington impersonator demonstrates a proper 'Virginia bow' to a young tourist Photograph: Mike Theiler/EPA Photograph: Mike Theiler/guardian.co.uk Marjah, Afghanistan: US soldiers take up positions in a compound during a gun battle with Taliban militants Photograph: David Guttenfelder/AP Photograph: David Guttenfelder/guardian.co.uk Panama City, Panama: Drummers take part in carnival celebrations Photograph: Arnulfo Franco/AP Photograph: Arnulfo Franco/guardian.co.uk 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 Photograph: Oswaldo Rivas/guardian.co.uk Beijing, China: Acrobats perform during celebrations to mark Chinese New Year Photograph: Christina Hu/Reuters Photograph: Christina Hu/guardian.co.uk Bishkek, Kyrgyzstan: A homeless man drinks out of a mug bearing the image of a $100 bill Photograph: Vladimir Pirogov/Reuters Photograph: Vladimir Pirogov/guardian.co.uk