24 hours in pictures

Mexico City, Mexico: Nuns wear face masks during a closed door mass at the Metropolitan Cathedral following the swine flu outbreak Photograph: Dario Lopez-Mills/AP

London, UK: Runners make their way along Embankment during the 2009 Flora London Marathon Photograph: Ryan Pierse/Getty Images

Ramallah, West Bank: Shadows of Palestinians playing with a ball, seen on a wall with graffiti supporting the ruling Fatah party Photograph: Muhammed Muheisen/AP

Shanghai, China: A worker welds parts of a foundation at the construction site of a new tunnel, which runs beneath the Huangpu river. It will be completed in time to serve the World Expo 2010 Photograph: Eugene Hoshiko/AP

Seoul, South Korea: Buddhists take part in the Lotus Lantern festival to celebrate the birth of Buddha, which falls on 2 May Photograph: Lee Ki-Tae/EPA

Mohammadpur, Bangladesh: Slum dwellers in a queue to collect water from a mobile water tank Photograph: Abir Abdullah/EPA

Puerto Ordaz, Venezuela: Swimmers compete in the annual race where the rivers Orinoco and Caroni meet Photograph: Alejandro Rustom/Reuters

Cangahua, Ecuador: A group of indigenous people queue outside a polling station Photograph: Pablo Cozzaglio/AFP/Getty

Gaza, Gaza City: Hamas policemen stand near an effigy of Israeli soldier Gilad Schalit, who was captured by Hamas-allied militants in 2006 Photograph: Ali Ali/EPA

Chile: A police officer keeps watch from an observation tower at the Colina 2 prison. Ten inmates died and three were injured after a fire broke out at the prison Photograph: Martin Bernetti/AFP/Getty

Krichim, Bulgaria: Volunteers try to clear the Vacha river, which is filled with rubbish Photograph: Dimitar Dilkoff/AFP/Getty

Alkmaar, Netherlands: Supporters of the football team AZ celebrate the team's championship victory Photograph: Lex Van Lieshout/AFP/Getty Images

Trujillo, Peru: Berselia Hernández Chavarri, a seven-day-old premature baby girl, lies in an incubator as her mother, Sonia Chavarri, touches her hand Photograph: Karel Navarro/AP

San Sebastian, Spain: Young dancers take part in an exhibition of classic dance Photograph: Javier Etxezarreta/EPA

Sydney, Australia: A model on the catwalk at the Wayne Cooper show during Australian fashion week Photograph: Tracey Nearmy/EPA