24 hours in pictures : December 19 2007

Pamplona, Spain: Two people enjoy the snow . A cold wave hit Spain overnight, and the day started with snow blocking dozens of roads and several mountain passes Photograph: Jesus Diges/EPA

London, UK: Royal Mail workers process letters and packages before the Christmas deadline on Thursday Photograph: Cate Gillon/Getty

Calcutta, India: Street demonstrate for children's rights, shelter, healthcare and education Photograph: Piyal Adhikary/EPA

Santiago, Chile: Women read letters from children to Santa Claus at the central post office. In a Christmas tradition, Chileans read the letters and make true the wish for presents of the child whose letter they like the most Photograph: Geraldo Caso/AFP

Madrid, Spain: The Libyan leader, Muammar Gadafy (l), is welcomed by mayor of Madrid, Alberto Ruiz Gallardon, overlooked by a painting of King Juan Carlos Photograph: Bernat Armangue/AP

Taean, South Korea: Volunteers work to clean up a huge oil spill that has polluted the waters Photograph: Yon Hap/EPA

Paris, France: The event Rendezvous at the Poles aims to bring the attention of tourists visiting the Eiffel tower to the problems of the global warming Photograph: Franck Fife/AFP

Gaza City, Gaza Strip: The dismissed Hamas prime minister, Ismail Haniya (c), speaks to the crowds gathered for Eid al-Adha prayers Photograph: Mohammed Abed/AFP

Thousand Oaks, US: Shoppers make their way through the rain at Janss Marketplace Photograph: Eric Parsons/AP

Mehrabpur, Pakistan: Rescue workers recover an injured girl from the wreckage of a train after an express train crowded with holiday travellers derailed in southern Pakistan, killing at least 56 people Photograph: Shakil Adil/AP

Tenerife, Spain: A would-be immigrant rests, exhausted after arriving at Las Galletas beach, one of a group of 59 who arrived on the island Photograph: Arturo Rodriguez/AP

Naples, Italy: A bus drives past waste on the pavement Photograph: Ciro Fusco/EPA

Jenin, West Bank: A Palestinian woman mourns at the grave of a relative Photograph: Saif Dahlah/AFP

Davenport, US: Former president Bill Clinton stops for a photo with the cheerleading team while campaigning with the basketball player Earvin 'Magic' Johnson on behalf of Hillary Clinton Photograph: David Lienemann/AP

Amsterdam, the Netherlands: A 2,000-year-old piece of ivory furniture is displayed at the Hidden Afghanistan exhibition at the Nieuwe Kerk museum Photograph: Michel Porro/Getty

Novy Urengoy, Russia: A general view of the oil and gas plant as Russia and Germany launch the Yuzhno Russkoye gas field Photograph: STR/EPA