Steve Clark, 55, and his wife, Susan, of Provo, Utah, were killed in a motor vehicle accident near St. George, Utah, on May 24.
Clark was born Nov. 1, 1957 in Great Falls, Mont., the fifth son of Maurice Paul Clark and Patricia Gertrude Myers Clark. After graduating from Montana State University with an engineering degree, he worked for several years as a professional engineer and eventually started his own engineering firm, but was always focused on building energy efficiency.