Young men ignite rockets during Greek Orthodox Easter celebrations on the eastern Aegean island of Chios, on April 20, 2014. Thousands of handmade rockets are fired every year on Great Saturday night, before the Resurrection, by locals of the two rival churches of Agios Markos and Panagia Erithiani, in the village of Vrontados. (Photo by Petros Giannakouris/Associated Press)

A street performer breathes fire during a show in Donetsk, eastern Ukraine April 21, 2014. (Photo by Baz Ratner/Reuters)

Filipino firefighters walk on the roof of a house as a huge fire rages through a slum area in Manila on April 20, 2014. Almost 1,000 families were affected by the fire according to local media reports. (Photo by Noel Celis/AFP Photo)

A person tries to extinguish flames as sparks fly during a wild forest fire in Valparaiso, Chile, Sunday April 13, 2014. Authorities say the fires have destroyed hundreds of homes, forced the evacuation of thousands and claimed the lives of at least seven people. (Photo by Luis Hidalgo/AP Photo)

Kyrgyz people release a candle-lit paper lamp into the sky, in Kyrgyzstan's capital Bishkek on April 26, 2014. (Photo by Vyacheslav Oseledko/AFP Photo)

A Nepalese Hindu devotee lights an oil lamp during the last day of a Mahayagya, holy rituals that last for seven days, near Pashupatinath temple in Katmandu, Nepal, Tuesday, April 22, 2014. The Mahayagya was organized by Hindu devotees to welcome Nepali New year, for peace in Nepal and to generate income to construct a temple of Goddess Laxmi in Sankhu on the outskirts of Katmandu. (Photo by Niranjan Shrestha/AP Photo)

Fire crews work to control a blaze at the Younkers building in downtown Des Moines, on March 29, 2014. The massive fire swept through a century-old building that was being renovated, causing its upper floors to collapse and authorities to close down numerous streets in downtown Des Moines. No one was injured. (Photo by Bryon Houlgrave/The Des Moines Register)

An oak wheel stuffed with straw is set on fire and rolled down a hill to celebrate the Easter Wheel (Osterraeder) tradition in Luedge, Germany, 20 April 2014. Originally a custom of a sun cult by which the awaking spring was welcomed, the rolling of burning wheels has taken place on Easter Sunday for centuries. The custom is in the finals for the German application for the inclusion of cultural customs in the Unesco Intangible cultural heritage list. (Photo by Caroline Seidel/EPA)