Demonstrators take cover from police water cannon during a rally in Santiago June 16, 2008. Hundreds of teachers and students on Monday marched through Santiago protesting against a proposed education reform as Chilean teachers demanded higher wages. (Ivan Alvarado, Reuters)

Child laborers carry stones on their head at a stone crusher on the outskirts of Gauhati, India, Wednesday, June 11, 2008. Today is the World Day against Child Labor. (Anupam Nath, AP)

A man carries a canister of cooking gas through the fog in El Alto, a town on the outskirts of La Paz, Wednesday, June 11, 2008. Temperatures dropped to minus six degrees Celsius, or 21 degrees Fahrenheit. (Dado Galdieri, AP)

Participants take part in the Kites For Peace event at the base of the Washington Monument June 10, 2008 in Washington, DC. Hundreds of the kites flown in the event will be mailed by event organizers to children in countries currently at war. (Win McNamee, Getty Images)

A dramatic formation of clouds moves over Oconomowoc, Wis. Sunday, June 8, 2008 as the state contends with heavy rains, wind damage and areas of flooding. (John Hart, Watertown Daily Times / AP)

A Peruvian inmate wearing a lettuce costume waits to perform during a ceremony marking the celebration of the Environment Day at the Sarita Colonia prison in Lima, June 6, 2008. (Pilar Olivares, Reuters)

A young girl cries while listening to a speech by US Democratic presidential candidate, Illinois Senator Barack Obama during a rally to officially kick off the general election campaign on June 05, 2008 at the Nissan Pavillion in Bristow, Virginia. (Tim Sloan, AFP / Getty Images)

Chinese police officers stand watch on the visitors after the daily flag raising ceremony in Beijing's Tiananmen Square at dawn on the 19th anniversary of the military crackdown on democracy protesters, Wednesday, June 4, 2008. Dozens of people remain imprisoned for taking part in the 1989 pro-democracy protests centered in Tiananmen Square, but releasing them would improve China's image ahead of the Beijing Olympics this summer, a human rights group said. (Andy Wong, AP)

Women talk together as they stand in the water of lake Chiemsee during warm summer weather and temperatures up to 30 degrees in Chieming, southern Germany, on Monday, June 2, 2008. (Christof Stache, AP)

Children play in the rain in the FEMA Diamond travel trailer park May 22, 2008 in Port Sulphur, Louisiana. The FEMA federal trailer parks that house many Hurricane Katrina victims are set to close May 31 prompting fears that people will be forced into residences they can't afford or will be left homeless. Most residents will receive a federal subsidy to move to apartments but affordable rental housing is scarce in some areas including New Orleans and Baton Rouge. (Mario Tama, Getty Images)

The US Air Force Thunderbirds perform a flyover as graduates of the US Air Force Academy toss their hats in the air May 28, 2008 at the close of the US Air Force Academy Graduation and Commissioning Ceremony at the US Air Force Academy in Colorado Springs, Colorado. (Mandel Ngan, AFP / Getty Images)

A child who survived the last week's earthquake plays with a paper airplane at an earthquake refugees camp in Mianzhu, in China's southwest Sichuan province Friday, May 23, 2008. Rebuilding shattered buildings and cracked roads in central China will take three years, the government said Friday, as the death toll from the earthquake rose to more than 55,000. (Oded Balilty, AP)

Parents grieve their children, who died at Fuxin Primary School, on May 22, 2008 in Wufu, Sichuan province, China. Nearly 7,000 classrooms collapsed in the earthquake last week, killing thousands of students and parents are trying to pressure the local government into investigating alleged local corruption, greed and mismanagement. Tens of thousands of people remain buried in collapsed buildings from the 7.9 earthquake which has killed well over 51,000. State media reported that 10 million people have been directly affected by the quake with 5 million homeless. (Paula Bronstein, Getty Images)

A woman carries a baby at a temporary shelter set up for earthquake evacuees in Mianyang, southwest China's Sichuan province, Tuesday, May 20, 2008.(Oded Balilty, AP)