Pakistani girls, who were displaced from a village near Multan, Pakistan by floods in 2010, play with stones in a slum on the outskirts of Islamabad on April 24.

Pakistani men, displaced from a village near Multan by floods in 2010, play a game of pool in a slum on the outskirts of Islamabad, Pakistan on April 24.

A Pakistani child, whose family was displaced from their village near Multan, Pakistan by floods in 2010, sleeps in a hammock attached in a makeshift tent in a slum on the outskirts of Islamabad on April 24.

Pakistani Nori Basheer, 25, who was displaced by 2010 floods from a village near Multan, Pakistan, plays with her son Baber, while sitting outside her makeshift tent in a slum on the outskirts of Islamabad on April 24.

A Pakistani family makes a tandoor, a clay oven used in cooking and baking, outside their makeshift tent on April 24 in a slum on the outskirts of Islamabad, Pakistan.

An aerial photograph shows a break in highway BR 356 that was washed away after several days of heavy rains swelled the Muriae River in Campos, 142 miles northeast of Rio de Janeiro, Jan. 5, 2012. Civil Defense officials said the 4,000 residents of the town are being evacuated, and they expect the flooding to continue for three to four months.

People watch water run through the badly damaged Route BR-356, connecting Belo Horizonte and Sao Joao da Barra, in Rio de Janeiro State, after floodwaters burst a nearby dike on Jan. 5, 2012. The Civil Defense department of Rio de Janeiro state says the waters of the Muriae River are expected to reach the town of Tres Vendas and its 4,000 residents are being taken to temporary shelters. Eight people were killed in floodwaters or mudslides in the southern states of Rio de Janeiro and Minas Gerais in recent days, while thousands have been evacuated.

A girl stands on the top of the roof of her house, where her family has gathered belongings in Campos, Rio de Janeiro State, after floodwaters burst a nearby dike on Jan. 5, 2012.

Firefighters evacuate residents from a flooded neighborhood in Patio Bonito, southwest of Bogota on Dec. 7. At least 96 people have died as a result of heavy rains, authorities said. Colombia's weather office expects La Nina-related downpours to continue at least until the end of the first quarter of next year.

Two men wait on their car in a flooded street of the Bella Vista neighborhood, following the overflowing of the Bogota River, on Dec 7 in Bogota, Colombia. Bogota's mayor Clara Lopez on Wednesday declared a state of emergency because of the floods and mudslides caused by heavy rains.

Firefighters evacuate residents from a flooded neighborhood in Patio Bonito, southwest of Bogota on Dec. 7.

A woman carries her daughter on her shoulders as she wades through a flooded area of a residential complex in the Bella Vista neighborhood, following the overflowing of the Bogota River, on Dec. 7., in Bogota.

Firefighters work in the mud following a landslide at Scarcelli, a district of Saponara, in the province of Messina, in Sicily Nov. 23, A village was devastated by a landslide caused by heavy rain. Three persons are reported dead, according to local authorities.

Cars are seen stranded in mud following a landslide at Scarcelli, a district of Saponara, in the province of Messina, in Sicily on Nov. 23. A village was devastated by a landslide caused by heavy rain. Three persons are reported dead, according to local authorities.

Soldiers drive armoured vehicles through a flooded street as they move them to higher ground in Bangkok on Nov. 2..Thai authorities tried to stem growing anger among flood victims on Tuesday as water swamped new neighbourhoods and the government began mapping out a plan costing billions of dollars to prevent a repeat disaster and secure investor confidence.

A Thai roadside vendor sits on a platform of her submerged shop in a flooded neighborhood in Bangkok, Thailand, Wednesday, Nov. 2.

A Thai man washes in floodwaters along the Chao Praya river in Bangkok on Nov. 2. Thai authorities warned flood victims of an increased danger of electrocution in densely populated Bangkok and its suburbs as the toll from the worst inundation in decades surged above 400.

Residents receive water from soldiers as they stand on a flooded street in Bangkok on November 2. Authorities in the Thai capital repaired a damaged flood gate on Wednesday that has become the focus of anger, fear and rivalry between arms of government battling the country's worst floods in decades.

Thai flood victims who took shelter at Don Muang airport swim in the floodwater next to a parking ramp in Bangkok, Thailand Wednesday, Nov. 2. Monsoon rains since July have inundated a third of Thailand, costing billions of dollars in damage to submerged homes, businesses and crops. The worst-hit provinces are just north of Bangkok, but floodwaters began swamping districts on the capital's northern outskirts last month.

Rescuers on the river bank watch a passenger boat capsize after it was hit by a restaurant boat during a rescue operation in the flooded Jialing River in southwest China's Chongqing Municipality on Sept. 20. Heavy rains that have unleashed flooding across southwest China and left at least 14 people dead will continue to pound the region in the coming days.

Residents are evacuated from a flood zone in Guang'an in southwest China's Sichuan province on September 19. Heavy rains that have unleashed flooding across southwest China and left at least 14 people dead will continue to pound the region in the coming days, according to the country's meteorological agency.

In this photo taken Monday, Sept. 19, 2011, rescue workers reach a house in a flooded area by boat in Daxian county in southwest China's Sichuan province.

A local resident drives his donkey cart through a flooded street in the flood-hit Badin district of Sindh province on September 14.

Pakistani flood affected villagers struggle to receive food handouts at a makeshift camp in Hyderabad on Sept. 14.

Pakistani villagers take shelter on a dry patch in the flood-hit Badin district of Sindh province on September 14. Pakistan called on the world to speed up relief efforts after torrential rains exacerbated major floods, killing 270 people and making another 200,000 homeless in the south of the country.