24 hours in pictures

Hong Kong, China: A visitor to the Hong Kong International Art Fair views a sculpture titled Nude No 2 by the Chinese artist Mu Boyan Photograph: Bobby Yip/Reuters

Santa Monica, US: Cirque du Soleil perform during a preview of a forthcoming show Photograph: Gabriel Bouys/AFP/Getty Images

Chushot, India: A police officer keeps guard as voters wait to cast their ballots at a polling station Photograph: Amit Gupta/Reuters

Luxembourg: Police block the entrance of the headquarters of the world's biggest steel maker, ArcelorMittal, as employees try to force their way into the annual general meeting of shareholders Photograph: Jean-Christophe Verhaegen/AFP/Getty Images

Sao Paulo, Brazil: A model poses for a photoshoot that will be used to draw attention to discrimination against African Brazilian models in fashion shows Photograph: Mauricio Lima/AFP/Getty Images

Asuncion, Paraguay: A demonstrator shows the palms of her hands pierced with nails during a homeless people's protest march Photograph: Norberto Duarte/AFP/Getty Images

Seoul, South Korea: A foot of a cloned fluorescent dog Ruppy, a 17-month-old beagle, glows in the dark under ultraviolet light at Seoul National University. Scientists took a protein, much like that found in some fluorescent sea anemones, and inserted it into the cell of a beagle Photograph: Jo Yong-Hak/Reuters

Baghdad, Iraq: A jockey touches the mouth of his horse before a race Photograph: Muhannad Fala'ah/Getty Images

Fatima, Portugal: A statue of the madonna is carried by believers to the church of the Fatima shrine for a night mass Photograph: Francisco Leong/AFP/Getty Images

Swabi, Pakistan: Displaced children, fleeing the military offensive in the Swat valley, at a UNHCR camp Photograph: Faisal Mahmood/Reuters

Dover air force base, US: Military personnel salute a vehicle containing the remains of soldiers killed in Iraq and Afghanistan Photograph: Matt Rourke/AP

Bethlehem, West Bank: Members of a Palestinian guard of honour prepare for the arrival of Pope Benedict XVI Photograph: Uriel Sinai/Getty Images