Boy smiles as he is rescued from a collapsed house after a 7.9 magnitude earthquake hit, in Kathmandu, Nepal

A boy smiles as he is rescued from a collapsed house after a 7.9 magnitude earthquake hit, in Kathmandu, Nepal April 25, 2015. The powerful earthquake struck Nepal and sent tremors through northern India on Saturday, killing hundreds of people, toppling an historic 19th-century tower in the capital Kathmandu and touching off a deadly avalanche on Mount Everest. REUTERS/Navesh Chitrakar