Tom Gorner, founder of Skyscape Services, flies his drone in the backyard of his Virginia home. His company uses the drone to photograph real estate for prospective buyers. Brian Naylor/NPR hide caption

itoggle caption Brian Naylor/NPR

A man in Nairobi, Kenya, stands in front of a mural of President Obama, created by the Kenyan graffiti artist Bankslave, ahead of Obama's trip to Kenya and Ethiopia. Ben Curtis/AP hide caption

itoggle caption Ben Curtis/AP