Tents outside a hospital light up at night after Saturday's earthquake hit Lushan county, Ya'an, Sichuan province, on April 22. Hundreds of survivors of an earthquake that killed nearly 200 people in southwest China pushed into traffic on a main road on Monday, waving protest signs, demanding help and shouting at police. The Chinese characters on the tent read "Disaster relief".

Medical personnel work with a flashlight in a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province, on April 21.

Chinese soldiers cook breakfast in a rescue camp in Taiping town, Lushan County, Sichuan Province, China, on April 23.

Residents gather around a fire outside damaged homes in Taiping town, Lushan County, Sichuan Province, China, on April 23.

People gather at a power supply station in a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province, on April 21.

A man works in a shed at a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province, on April 21.

People fall asleep at the power supply station at a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province on April 22.

An Indian barber holding a candle, cut hair for a customer at his shop in Kolkata, India, July 31. India's energy crisis cascaded over half the country Tuesday when three of its regional grids collapsed, leaving 620 million people without government-supplied electricity for several hours in, by far, the world's biggest blackout.

Indian women and children wait inside a darkened train carriage at a railway station in New Delhi on July 31. A massive power failure hit India for the second day running as three regional power grids collapsed, blacking out more than half the country in a crisis affecting over 600 million people.

A passenger looks through the window of a train as he waits for electricity to be restored at a railway station in New Delhi July 31. Grid failure hit India for a second day on Tuesday, cutting power to hundreds of millions of people in the populous northern and eastern states including the capital Delhi and major cities such as Kolkata.

Muslim girls study in the light of candles inside a madrasa, or religious school, during power-cut in Noida on the outskirts of New Delhi, on July 30. Grid failure left more than 300 million people without power in New Delhi and much of northern India for hours on Monday in the worst blackout for more than a decade, highlighting chronic infrastructure woes holding back Asia's third-largest economy.

An Indian passenger sits as others sleep inside the compartment of a stationary train following the power outage that struck in the early hours of Monday, on July 30, at a train station in New Delhi, India. A major power outage has struck northern India, plunging cities into darkness and stranding hundreds of thousands of commuters.

Indian passengers wait for their train at a railway station following an overnight power outage in New Delhi, on July 30.

A worker uses a chainsaw to clear branches from a tree that fell onto the 14th fairway at Congressional Country Club in Bethesda, Md., Saturday, June 30, 2012, after a strong storm blew through overnight. The AT&T National golf tournament was postponed to allow workers to clear the course. More than two million people across the eastern U.S. lost power after violent storms and two people died, including a 90-year-old woman asleep in bed when a tree slammed into her home, a police spokeswoman said Saturday.

This vehicle was among the dozens stranded in high water across Houston on Monday.

This intersection in Houston, at Buffalo Speedway and Richmond Avenue, saw plenty of heavy rain Monday.

People pass a generator store on a street on July 25, 2011 in Baghdad, Iraq. Despite a recent doubling of the megawatts of electricity available to Iraqis, many people still only receive a few hours of electricity a day from the national grid and therefore have to depend on generators and other private sources of electricity. With more homes owning computers, televisions, refrigerators and air conditioners there is an increased demand for electricity, especially in the scorching summers. The lack of dependable electricity has been one of the main sources of demonstrations against the government. As the deadline for the departure of the remaining American forces in Iraq approaches, Iraqi politicians have been increasingly pressured to  give a final decision about extending the mandate for a small U.S. military presence beyond the end of the 2011 deadline.

Over 100 electric boxes connect homes in a building to a collective generator in a poor neighborhood on July 25, in Baghdad, Iraq.

A man walks under a tangle of wires connecting homes to a collective generator in a poor neighborhood on July 25 in Baghdad, Iraq.

A technician inspects the blades of a turbine during a planned maintenance intervention at the Bugey nuclear power plant in Saint-Vulbas, near Lyon April 19, 2011. Electricite de France (EDF) runs the country's 58 nuclear reactors, which meet close to 80 percent of the country's power needs and which its rivals say give the state-owned company a competitive advantage.

A technician monitors power output in the control room at the operating nuclear power plant at the Bugey nuclear power.

A technician works above the basin holding nuclear fuel elements at the Bugey nuclear power plant.

Technicians monitor the MIS (Inspection Machine in Service) robot which inspects inside the reactor's tank during programmed servicing and maintenance at the Bugey nuclear power plant.

Technicians work near a turbine during a planned maintenance intervention at the Bugey nuclear power plant.