Iwo Jima offered an important emergency airfield roughly halfway between the B-29 airbases at Tinian and Saipan and the distant Japanese mainland six flying hours away.

For centuries, humans have lived underground. Today, that ancient practice is under dire threat—even as cave life makes more ...

Worth, a Marine who fought at Iwo Jima during World War II, sent this photo of himself to his parents in New Jersey. ROBERT WORTH ...