24 hours in pictures

Oberhof, Germany: A snow-covered tree is illuminated in a car park Photograph: Christian Charisius/guardian.co.uk Shanghai, China: A ballet student, part of a class of girls aged three to five years old, stretches during her lesson at a sports centre Photograph: Nir Elias/Reuters Pogost, Belarus: People celebrating Orthodox christmas perform a toast with vodka Photograph: Viktor Drachev/guardian.co.uk Pasadena, USA: University of Texas Longhorn fans pose for photographs outside the Rose Bowl, the site of the NCAA's BCS National Championship football match Photograph: Danny Moloshok/guardian.co.uk Harbin, China: Siberian tigers fight over a wild bird at the Harbin Tiger Park Photograph: Ng Han Guan/AP Qena, Egypt: Riot police during clash with protesters outside a morgue after Christians were killed outside a midnight mass for Coptic Christmas Photograph: /guardian.co.uk Mongla, Bangladesh: Boatmen carry passengers on a canal at Mithakhail Photograph: Abir Abdullah/EPA Ankeveen, The Netherlands: Ice skaters on the Ankeveense Plassen Photograph: Toussaint Kluiters/EPA Algiers, Algeria: Benmouloud Ameziane, union leader for the state-owned National Company of Industrial Vehicles during a strike at Rouiba Photograph: Louafi Larbi/guardian.co.uk Kabul, Afghanistan: A horseman holds up his prize money after winning a game of Buzkashi Photograph: Massoud Hossaini/AFP/Getty Images Khost, Afghanistan: US military medical staff wheel an Afghan man to be treated in FOB Salerno after he was injured during fighting and a suicide bombing in Garbuz Photograph: Spencer Platt/guardian.co.uk Riviera Beach, USA: Manatees gather near the outlet pipes of an inactive power station in an effort to stay alive during unusually cold weather Photograph: Carlos Barria/guardian.co.uk Springfield, Ohio, USA: Emergency services rescue one of several victims trapped in a bus that collided head-on with a tanker Photograph: Marshall Gorby/guardian.co.uk New Delhi, India: A military band practices near the India Gate monument ahead of the Republic Day parade Photograph: Kevin Frayer/AP Danville, USA: Snow flakes are seen on the windscreen of a car in Kentucky Photograph: Clay Jackson/guardian.co.uk