24 hours in pictures : April 24 2007

Paris, France: The Pompidou Centre shows the work of French artist Marcel Duchamp, Air de Paris (right), containing the air of Paris. The Pompidou Centre is celebrating its 30th anniversary with an exhibition entitled Airs de Paris. Photograph: STEPHANE DE SAKUTIN/AFP

Space: This infrared image from Nasa's Spitzer Space Telescope shows the Rosette nebula, a pretty star-forming region more than 5,000 light-years away in the constellation Monoceros. In optical light, the nebula looks like a rosebud, or the ‘rosette’ adornments that date back to antiquity. Photograph: NASA/Guardian

Mosul, Iraq: Iraqis wait to be searched and questioned by US soldiers during a raid in the northern Iraqi city of Mosul. Photograph: Mauricio Lima/AFP

Bogota, Colombia: Children read books during a ceremony to celebrate Unesco’s decision to choose Bogota as the 2007 World Book Capital. Photograph: Fernando Vergara/AP

Barcelona, Spain: Catalan women look at bookstalls installed in the Ramblas to choose a book for the men in their lives, who in return will give them flowers, during the Dia de Sant Jordi (St George's Day) to celebrate Catalonia's patron saint. Photograph: JULIAN MARTIN/EPA

Zurich, Switzerland: A book sculpture hangs in the main station at the World Book Day. Photograph: EDDY RISCH/EPA

Tehran, Iran: An Iranian police officer detains a woman for not adhering to the strict Islamic dress code. Iran's hard-line police has detained about 300 women and gave warnings to more than 3,500 others within two days in the capital Tehran as part of a new crackdown against women that hard-liners consider to be ‘insufficiently veiled’ or dressed in an ‘immoral’ fashion. Photograph: Hasan Sarbakhshian/AP

New York, USA: Former President Bill Clinton introduces his wife, Democratic presidential hopeful Senator Hillary Rodham Clinton, at a fundraiser. Photograph: Chris Hondros/Getty

Damascus, Syria: An Iraqi girl draws the Iraqi flag while her family waits at the registration centre of the UNHCR, where Iraqi refugees are registering their names for residence in Syria. Photograph: NABIL MOUNZER/EPA

Mogadishu, Somalia: Wounded men lay in the corridor of the SOS Hospital after the hospital become overcrowded during ongoing fighting. Photograph: BAKAR AHMED/EPA

Kiev, Ukraine: A young supporter of President Viktor Yushchenko leans to the wall as she takes a break during a rally. Photograph: SERGEI SUPINSKY/EPA

Bucharest, Roumania: A Romanian military police instructor breaks bricks with his right hand during a public demonstration at Izvor park. Photograph: ROBERT GHEMENT/EPA

Mexico city, Mexico: The Museum of Guanajuato, Mexico, which houses hundreds of perfectly preserved mummies. The Guanajuato mummies were discovered in a cemetery near the colonial town, and dug up between 1896 and 1958 and then housed in the local museum, which continues to attract tourists from all over the country and abroad. Photograph: LEOPOLDO SMITH/EPA