Bill Forrest, the legendary climber and inventor from Colorado who founded Forrest Mountaineering, died on Dec. 21 of a heart attack while snowshoeing with his wife, Rosa. He owned 17 U.S. patents, generally related to climbing and snowshoeing equipment. One of his legacies is the first rock-and-ice hammer with interchangeable picks, which is currently on display in the Smithsonian Institute in Washington, D.C.  A U.S. Army veteran, Forrest stopped technical climbing in 1993 after trying to reach the summit of Mount Everest. This pursuit led him to contract ameobic dysentery, an ailment that plagued him for years.