South African President Jacob Zuma performs during the traditional wedding ceremony for his daughter Duduzile Zuma and Lonwabo Sambudla, former head of Lembede Investment Holdings, on April 23 near Mthatha, Eastern Cape.

A boy plays in the middle of a landslide in Sabaneta, a town in the north west of Colombia, on April 25. Close to three million people have been affected and 418 people have been killed by the rains in the country during the last year, according to the Red Cross National Relief director, Cesar Urueña.

A man grieves at the monument to Chernobyl victims in Slavutich, some 30 miles away from the accident site, and where many of the power station's personnel used to live, during a memorial ceremony early on April 26, 2011.

A boy points to his grandmother's portrait in the Chernobyl victims' monument in Slavutich, some 30 miles away from the accident's site, and where many of the power station's personnel used to live, during a memorial ceremony on the night on Monday, April 25, 2011.

A transport helicopter combats a fire at Fochteloerveen in Drenthe Bovensmilde on April 25, 2011. The Dutch banned barbecues, campfires and outdoor smoking this Easter, and the Swiss are forecasting potentially the worst drought in Europe for more than a century.

A firefighter works the fire at Fochteloerveen in Drenthe Bovensmilde.

Anti-nuclear protesters march towards the Grafenrheinfeld nuclear power plant near the southern German city of Bergrheinfeld on Monday, April 25. Several Easter Monday protests took place throughout the country on the eve of the 25th anniversary of the Chernobyl disaster and after Japan's nuclear accident at Fukushima.

Anti-nuclear activists sit in front of a nuclear power plant during an Easter protest march in Grohnde, Germany, on Monday. Tomorrow, April 26, 2011, marks the 25th anniversary of the Chernobyl nuclear disaster - a date that sparks anti-nuclear protests all over Germany.

Anti-nuclear protesters take part in a march near in the northern German city of Kleinensiel on Monday.

Miranda Husband, 11, center, and Issac Husband, 9, third left, of Greencastle, Pa., roll Easter eggs on the South Lawn of the White House in Washington, on Monday, April 25, at the White House Easter Egg Roll hosted by President Barack Obama and first lady Michelle Obama. Thousands of children will participate in the event, which dates back to 1878, and is named for races where children push colored eggs across the grass using wooden spoons.

First Lady Michelle Obama watches as TV personalities Kelly Ripa and Al Roker share a crepe at the annual Easter Egg Roll on Monday.

President Barack Obama, left, and first lady Michelle Obama read a book titled "Chicka Chicka Boom Boom" to children during the annual Easter Egg Roll on Monday. Daughters Sasha, second right, and Malia, right, are seen on the right as they listen on with their dog Bo.

The White House Easter Egg Roll takes place on the South Lawn of the White House on Monday.

Police use a water cannon to disperse anti-government protesters during a demonstration demanding the ouster of Yemen's President Ali Abdullah Saleh in the southern city of Taiz on April 25.

Anti-government protesters flee after police opened fire in the air to disperse them during a demonstration demanding the ouster of Yemen's President Ali Abdullah Saleh in the southern city of Taiz on April 25.

Anti-government protesters carry a fellow protester wounded during clashes with police during a demonstration demanding the ouster of Yemen's President Ali Abdullah Saleh in the southern city of Taiz on April 25.

Guitars hang in a shop on Denmark Street on April 20 in London, England. Denmark Street, in the Soho area of central London, traces its musical connections back to the 1890s and is famous for its connection to contemporary British music after recording studios started setting up there in the 1960s. Many world-renowned recording artists, including: Jimi Hendrix, The Sex Pistols and Elton John have played and recorded in the street. The Rolling Stones recorded their first album in 1964 at the street's Regent Sounds Studio's. Known as London's 'Tin Pan Alley' Denmark Street is regarded as one of, if not the, best music streets in Europe and contains numerous specialist music shops, with many boasting of a long and prestigious musical history.

A general view of Denmark Street on April 20, 2011 in London, England. Denmark Street, in the Soho area of central London, traces its musical connections back to the 1890s and is famous for its connection to contemporary British music after recording studios started setting up there in the 1960s.

A Gibson guitar hangs besides a poster with signatures from the many famous musicians and bands that have visited, in the Rare and Vintage Guitar shop on Denmark Street

A man opens the doors to Regent Sounds Studio on Denmark Street on April 20, 2011 in London, England. The Rolling Stones recorded their first album in 1964 at the street's Regent Sounds Studio's.

Graham Noden works on a Gibson J200 guitar belonging to Chris Martin from Coldplay in his shop on Denmark Street on April 20 in London, England.

An employee sorts a display of guitars in a shop on Denmark Street on April 20in London, England.

Guitars awaiting repair stack up at Graham Noden's workshop on Denmark Street on April 20 in London, England.

In this 1986 photo, a helicopter throwing chemicals to suppress radiation approaches the 4th destroyed reactor at the Chernobyl nuclear power plant in. On May 12, 1986, more than two weeks after the explosion, the leading Soviet daily newspaper Pravda published its first photograph from the site for the first time, shot three days earlier from a helicopter by Repik.

This 1986 photo, shows photographer Volodymyr Repik inside a helicopter as he covers the Chernobyl nuclear power plant disaster. On May 12, 1986, more than two weeks after the explosion, the leading Soviet daily newspaper Pravda published its first photograph from the site for the first time, shot three days earlier from a helicopter by Repik. "If I had been ordered now to get aboard and go, I would not have gone — you might have easily died there for nothing," said the 65-year-old Repik.

In this 1986 photo, a Chernobyl nuclear power plant worker holding a dosimeter to measure radiation level is seen against the background of a sarcophagus under construction over the 4th destroyed reactor on this file photo taken in 1986. On May 12, 1986, more than two weeks after the explosion, the leading Soviet daily newspaper Pravda published its first photograph from the site for the first time, shot three days earlier from a helicopter by Repik. "If I had been ordered now to get aboard and go, I would not have gone — you might have easily died there for nothing," said the 65-year-old Repik.

This 1986 photo shows photographers Volodymyr Repik, right, and Valery Zufarov in Chernobyl area after the explosion in the 4th reactor of the Chernobyl nuclear power plant. On May 12, 1986, more than two weeks after the explosion, the leading Soviet daily newspaper Pravda published its first photograph from the site for the first time, shot three days earlier from a helicopter by Repik."If I had been ordered now to get aboard and go, I would not have gone — you might have easily died there for nothing," said the 65-year-old Repik. Zufarov died in 1993, aged 52, of Chernobyl-related disease. His first pictures were made from a helicopter 25 meters above the plant.

In this April 4, 2011 photo taken at his home in Kiev, Ukraine, photographer Igor Kostin shows a photograph taken in the first days after the explosion of the 4th reactor at the Chernobyl nuclear power plant. The photo shows cleanup operations on the roof of the neighboring 3rd reactor. Wearing a lead protective suit and placing his cameras in lead boxes, photographer Igor Kostin made a terrifying and unauthorized trip to the Chernobyl danger zone just a few days after a nuclear power plant reactor exploded in the world's worst atomic accident. He came back home with nothing to show for his determination to document the crisis — the radiation was so high that all his shots turned out black.

Chernobyl nuclear power plant photographer Anatoly Rasskazov two months before the April 26, 1986 explosion. Anatoly Rasskazov was the first photographer to take photographs of the Chernobyl disaster. As a staff photographer for the plant, he was allowed in on the day of the explosion. On April 26, at noon — hours after the blast — he made a video of the destroyed reactor and submitted it to a special commission working in a bunker close to the plant, said Anna Korolevska, deputy director of Chernobyl museum in Kiev. Rasskazov died last year, aged 66, after suffering for years from cancer and blood diseases that he blamed on the radiation.