A cloud of ash belches out of Mexico's Popocatepetl volcano, some 55 km from Mexico City, May 20, 2013. Authorities have raised the alert level to "Yellow Phase Three," the fifth of a seven-stage warning system, restricting access to an area of 12 km around the volcano while preparing evacuation routes and shelters.
Teachers carry children away from Briarwood Elementary school after a tornado destroyed the school in south Oklahoma City, May 20, 2013. A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school.
Tens of thousands of ultra-Orthodox Jews of the Belz Hasidic Dynasty take part in the wedding ceremony of Rabbi Shalom Rokach, the Grandson of the Belz Rabbi to Hana Batya Pener, in Jerusalem, Israel, May 22, 2013.
An exiled Tibetan man wearing glasses with a likeness of the Dalai Lama prays during a protest at a local neighborhood after they were stopped from protesting near the venue where Chinese Premier Li Keqiang was attending a meeting, in New Delhi, India, May 20, 2013.
An Egyptian fisherman in Lake Qarun in Fayoum, Egypt, May 19, 2013. The Fayoum oasis is one of the oldest cities in Egypt and Africa, founded about 4000 B.C. and famous for agriculture and fishing.
Lightning strikes during a thunderstorm as tornado survivors search for belongings at their devastated homes in Moore, Okla., May 23, 2013.
Decorated Gnomes designed by celebrites are displayed at the Chelsea Flower Show in London, May 20, 2013. The Royal Horticultural Society lifted a ban on gnomes for this year only and will be auctioned off as part of the "Chelsea Centenary Appeal," to raise funds for the RHS Campaign of School Gardening. The Chelsea Flower Show run by the RHS celebrates its 100th birthday this year.
People sit in the rain as President Barack Obama delivers the 129th commencement speech at Morehouse College in Atlanta, May 19, 2013.
New American citizens pose for photos following a naturalization ceremony at the U.S. Citizenship and Immigration Services office in New York City, May 17, 2013.
A woman carries her child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., May 20, 2013.
Protesters stage a demonstration outside a Wendy's restaurant in New York City, May 18, 2013. The demonstrators called for the fast food chain to join Florida's Fair Food Program designed to improve wages for tomato pickers in the state.
Young South Korean women in traditional clothing take a rest as they participate in a traditional Confucian coming-of-age ceremony in Seoul, May 20, 2013.
A Romero brushes his hair while preparing for the Romeria del Rocio procession near El Rocio, Spain, May 17, 2013. The procession brings together roughly a million pilgrims each year making their way from throughout Andalusia by foot, on horseback and horse drawn carriages, to the doors of the Hermitage of El Rocio.
Former U.S. Representative Anthony Weiner greets voters and residents in the Harlem neighborhood of New York City, May 23, 2013. Weiner, who resigned from Congress two years ago in disgrace over his racy Twitter messages, announced he is running for New York City Mayor.
North Korean nurses sing and play the accordion while children dance during an event to start a campaign to give Vitamin A supplements and deworming pills to children at a nursery school in Pyongyang, North Korea, on Child Health Day, May 20, 2013.
FC Barcelona players, Jordi Alba, Andres Iniesta and Xavi Hernandez celebrate winning the Spanish League after the La Liga soccer match between FC Barcelona and Valladolid at Camp Nou stadium in Barcelona, May 19, 2013.
An Indian vendor waits for customers in the shade of trees on a hot afternoon in New Delhi, India, May 22, 2013. The capital city has been reeling under a heat wave with temperature crossing 112 degrees Fahrenheit on Wednesday.
Orthodox nuns attend a service to mark the Day of St. Cyril and Methodius, founders of the Cyrillic alphabet, inside the Cathedral of the Assumption, Cathedral Square in Moscow, Russia, May 24, 2013.
A man wearing a spiderman outfit performs for money as tourists look on in Madrid's main square, May 23, 2013.
North Korean swimmers enter a waterfall wading pool inside the Haedanghwa Health Complex in Pyongyang, North Korea, May 19, 2013. The newly opened complex houses a cooking school, multiple banquet rooms, swimming and wading pools, a billiards room and other recreational facilities.
First lady Michelle Obama dances with pre-kindergarten students while she visits the Savoy School in Washington, D.C., May 24, 2013. The Savoy School, once one of the lowest performing schools in the District of Columbia, has shown significant signs of improvement since being designated as one of eight schools selected last year for the Turnaround Arts Initiative by the President's Committee on the Arts and the Humanities.
An Afghan policeman sits on a wall on a mountain overlooking Kabul, Afghanistan, May, 22, 2013.