The Case of Speluncean Explorers: Nine New Opinions includes a reprint of Lon Fuller's classic article and a much-needed revision of and addition to the five op

During a holiday in Belgium, college students Evan and Matt decide to explore an uncharted cave in the Ardennes. Also along for the ride is Evan’s sister Kate

Matterhorn the Brave(R) is an exciting new juvenile fiction series about four young people who are recruited to keep an eye on the portals of earth that connect

As the war in Iraq continues and Americans debate the consequences of the war in Afghanistan, the war on terror, and the possibility of war with North Korea and