attention from other states, and in 1988, the program became the National Envirothon, with participation from Pennsylvania, Massachusetts, and Ohio. In 1992 Nova Scotia became the first Canadian province to join the competition. The competition was sponsored by various state, local, and provincial conservation programs and associations until 1997 when Canon Inc. began its support of the program, with local sponsors still supporting lower level competitions. In 1999 Canon became the title sponsor of the competition between the U.S. states and Canadian provinces, with the competition being renamed the "Canon Envirothon." It is currently referred to as the "NCF-Envirothon." Results Hosts and top-five competition place winners from the past thirteen North American Envirothon competitions: References External links Envirothon official website Science competitions Environmental education