24 hours in pictures

Kathmandu, Nepal: Police clash with students during a protest against increases in fuel and transportation prices Photograph: Narendra Shrestha/EPA

Zabul province, Afghanistan: British paratroopers wait at Camp Eagle as they prepare to be taken by helicopter to a football stadium in neighbouring Kandahar Photograph: Marco Di Lauro/Getty

New Delhi, India: Delhi Metro Rail Corporation workers watch a tunnel boring machine Photograph: Adnan Abidi/Reuters

Mexico City, Mexico: Polo Gomez wears a crown of syringes containing what he says is his own Aids-infected blood during a protest against the increasing price of Aids medicine Photograph: Gregory Bull/AP

Hong Kong: Navy personnel walk behind a US flag in the hangar of the USS Ronald Reagan docked at the mouth of Victoria Harbour Photograph: Mike Clarke/AFP

Oakville, US: Water floods farmland along the Iowa river Photograph: Steve Pope/EPA

Sydney, Australia: Customers walk across a translucent floor during the official opening of a new Apple store Photograph: Cameron Spencer/Getty

Zaragoza, Spain: An installation made from bottles inside cylinders filled with water decorates the entrance of Germany's pavilion at the Expo 2008 Photograph: Jorge Zapata/EPA

Kabul, Afghanistan: Women carry drinking water to a refugee camp Photograph: S Sabawoon/EPA

Paris, France: Aurore Mongel (L) competes in the 100m women's butterfly final of the Paris Open Photograph: Martin Bureau/AFP

Plovdiv, Bulgaria: A drill at a military base Photograph: Oleg Popov/Reuters

Havana, Cuba: A guard of honour looks back before a welcoming ceremony for Uruguay's President Tabaré Vázquez at the Revolution palace Photograph: Javier Galeano/AP

Cape Town, South Africa: A sick Somalian refugee lies on a makeshift bed inside a toilet block at Soetwater refugee camp Photograph: Pieter Bauermeister/EPA

Rafah, Gaza Strip: A Palestinian boy climbs on a destroyed section of the Gazan border fence separating Egypt and the southern Gaza Strip Photograph: Said Khatib/AFP

Darjeeling, India: Supporters of Gurkha Janamukti Morcha participate in a rain soaked rally during a strike called to demand a separate state for ethnic Gurkhas Photograph: Tamal Roy/AP

Edinburgh, UK: A highland cow is prepared for show Photograph: Jeff J Mitchell/Getty