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.

Anastase Tabaro, a self-taught engineer, walks by a stream near his hydroelectricity generating station in Rutare, Rwanda.

Tabaro sets up a television to play a DVD at his friend's home.

Tabaro sits next to a turbine generator he has built inside his generating station.

People take shelter from the rain in Rutare village.

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.

Ronaldo da Silva, left, and fellow inmates pedal stationary bikes to charge car batteries at a prison in Santa Rita do Sapucai, Brazil on Friday. An innovative program allows inmates at this medium-security prison to shave days off their sentence in exchange for riding stationary bikes hooked up to converted car batteries that are used to illuminate Santa Rita do Sapucai's town square.

A woman using her smart phone is illuminated by a battery powered street lamp in Santa Rita do Sapucai, Brazil. An innovative program allows inmates at the Santa Rita do Sapucai medium-security prison to shave days off their sentence in exchange for riding stationary bikes hooked up to converted car batteries that are used to illuminate the town square.

A inmate pedals a stationary bikes to charge car batteries at a prison in Santa Rita do Sapucai.

An inmate takes a break from pedaling a stationary bike to charge car batteries at a prison in Santa Rita do Sapucai, Minas Gerais state, Brazil.

Pacific Gas and Electric (PG&E) instructor Ray Atkinson observes as students in the PG&E's PowerPathway Pole Climbing Capstone course hang off of utility poles at the PG&E pole climbing training facility on Friday in Oakland, California. Students who are aspiring utility workers from Oakland's Cypress Mandela Training Center and Workforce Institute, a Division of San Jose/Evergreen Community College District, are participating in PG&E's PowerPathway program Pole Climbing Capstone course, a three week course that teaches skills to better prepare individuals to compete for jobs such as pre-apprentice lineworker within the utility industry. The free course is held at the new pole climbing training facility at PG&E's Oakport Service Center.

A student participating in Pacific Gas and Electric's (PG&E) PowerPathway Pole Climbing Capstone course attaches climbing Gaffs to his boots.

Students climb utility poles at the PG&E pole climbing training facility in Oakland.

A student participating in Pacific Gas and Electric's (PG&E) PowerPathway Pole Climbing Capstone course hangs from a utility pole.

Children studying at night using a flame on a stick in their manyatta (mud-thatch home) at Kisima in Samburu county, Kenya. Photos taken on May 24, 2012 and made available to msnbc.com today.

Angry protesters burn the furniture of a gas station to condemn fierce power cuts in Lahore, Pakistan on March 26, 2012. Pakistan is suffering from an energy crisis leading to the closure of industrial units and causing long hours of load shedding.

An Indian worker works amid installed solar panels atop the Narmada canal at Chandrasan village, about 25 miles from Ahmadabad, India on Thursday. The western Indian state of Gujarat is all set to become the first state in the country to generate solar power through panels mounted on a water body. Generated solar power will be supplied to villages alongside the canal, which will lead to lower transmission losses and also helping to reduce the evaporation of water.

An Indian worker washes his hands as installed solar panels seen atop the Narmada canal.