24 hours in pictures

Kathmandu, Nepal: Children hug trees as part of an attempt to create a Guinness World Record for the most number of people hugging trees Photograph: Navesh Chitrakar/Reuters

Zagreb, Croatia: A priest uses a book to shield himself from the sun as Pope Benedict XVI leads a mass during his two-day visit to Croatia Photograph: Alessandro Bianchi/Reuters

Kolkata, India: Labourers sleep on handcarts parked outside their living quarters Photograph: Rupak De Chowdhuri/Reuters

Beijing, China: Dragon dance performers on the first day of the Dragon Boat festival on the outskirts of the Chinese capital Photograph: Diego Azubel/EPA

Bucharest, Romania: Members and supporters of "Noua Dreapta" (The New Right) nationalist organisation march with a Romanian national flag during a protest against homosexuality, held before the city's annual Gay Parade Photograph: Daniel Mihailescu/AFP/Getty Images

California, USA: An inmate sits in a cage at the California Institution for Men state prison in Chino. California has been ordered to release more than 30,000 prisoners over the next two years to ease overcrowding Photograph: Lucy Nicholson/Reuters

Tel Aviv, Israel: A woman attending a peace demonstration in the city holds a sign endorsing a two-state solution based on 1967 borders Photograph: Oliver Weiken/EPA

Jammu, India: A cow drinks water from a polluted pond Photograph: Channi Anand/AP

London, UK: Soldiers return from Horse Guards Parade along the Mall after participating in the Colonel's Review, the second rehearsal for the annual Trooping the Colour ceremony Photograph: Oli Scarff/Getty Images

Lübeck, Germany: Spectators watch the arrival of the luxury cruise liner Queen Elizabeth as it arrives at its first port Photograph: Jens Buttner/AFP/Getty Images

Surrey, UK: Police officers stand guard at Epsom racecourse for the Epsom Derby Photograph: Paul Hackett/Reuters

Moscow, Russia: Actors perform during the second festival of street theatre, the Carnival of Fire Photograph: Yuri Kochetkov/EPA

San Salvador, El Salvador: Activists from Honduran social organisations protest against the country's readmission into the Organisation of American States. Honduras was expelled in 2009 after a military coup that ousted President Manuel Zelaya Photograph: Jose Cabezas/AFP/Getty Images

Peshawar, Pakistan: Paramedics at a hospital treat a boy injured in a bomb blast at a bus terminal near the city Photograph: Hasham Ahmed/AFP/Getty Images

Bogotá, Colombia: A man is suspended in the air by hooks stuck in his body during the fifth International Tattoo Convention Photograph: Eitan Abramovich/AFP/Getty Images