Alfons R. of Hamburg, Germany (shown in this undated photo), converted to Islam at age 17. Later, he went to Turkey, then Syria, to join ISIS. He was killed this past summer. Courtesy of Manfred Karg hide caption

An X-ray of the chest of a man with tuberculosis. The areas infected with TB bacteria are colored red. Science Photo Library/Corbis hide caption

By increasing the amount of serotonin in the spinal cord, an experimental drug helps nerve connections work better. Bee Smith/Ocean/Corbis hide caption

Anselm Kiefer's Sprache der Vogel belongs to one of Miami's best-known private collections. Collection Martin Z. Margulies hide caption

Supporters of Peggy Young attend a rally outside the Supreme Court Wednesday. Susan Walsh/AP hide caption

The local middle school plays its annual homecoming football game at Wilcox Central High in Camden, Alabama. Dan Carsen/WBHM hide caption

An inside view of this fossil Pseudodon shell shows that the hole made by Homo erectus is exactly at the spot where the muscle attached to the shell. Poking at that spot would force the shell open. Henk Caspers/Naturalis Leiden/The Netherlands hide caption