Chinese J-10 fighter jets pass an air force officer on the tarmac at the Yangcun airbase of the People's Liberation Army Air Force in Tianjin, southeast of Beijing, April 13, 2010. Frederic J. Brown/AFP/Getty Images hide caption

Paul Law, director of the Interactive Autism Network, and his wife, Kiely Law, changed the direction of their careers after having a child with autism. IAN seeks to facilitate research on autism spectrum disorders. Gail Burton/AP hide caption

This infrared image shows ash spewing out of Iceland's Eyjafjallajokull volcano. It was taken April 17 by a NASA spacecraft. Hotter areas, shown in red, can be seen at the ash plume's base. NASA/JPL/EO-1 Mission/GSFC/Ashley Davies hide caption

The 5 Browns' latest album features film music. Andrew Southam hide caption

Isabelle, 9, has a rare genetic disorder called Williams syndrome. One of the symptoms is that people have an inability to distrust anyone, even strangers. Isabelle often picks at her hands as a means of relieving stress. Jesse Neider/for NPR hide caption

Iranian President Mahmoud Ahmadinejad (foreground) visits the Natanz Uranium Enrichment Facility some 200 miles south of the capital, Tehran, in this April 8, 2008, photo issued by the Iranian president's office. Iranian President's Office/AP hide caption

The Philadelphia Orchestra wants to include more educational concerts, performances in the suburbs and possibly a bigger emphasis on lighter, more popular fare. Ryan Donnell hide caption

James Whitbourn's Luminosity expands the experience of classical music beyond the edges of the traditional map of classical style. Hewholooks/Wikimedia hide caption