Gallon Gallon The gallon () is a unit of measurement for volume and fluid capacity in both the US customary units and the British imperial systems of measurement. Three significantly different sizes are in current use: the imperial gallon defined as litres (4 imperial quarts or 8 imperial pints), which is used in the United Kingdom, Canada, and some Caribbean nations; the US gallon defined as 231 cubic inches (4 US liquid quarts or 8 US liquid pints) or about , which is used in the US and some Latin American and Caribbean countries; and the least-used US dry gallon defined
Gary Gallon Gary Gallon Gary Thomas Gallon (October 1, 1945 – July 3, 2003) was a Canadian environmental activist and policy advisor. President of the Canadian Institute for Business and the Environment, and editor of "The Gallon Environment Letter", Gallon dedicated 30 years to raising environmental awareness among Canadians and inspiring environmentalists worldwide. Originally from California, Gallon came to Canada during the Vietnam War. Gallon's early forays in environmental activism included helping to found the Society Promoting Environmental Conservation (SPEC, now one of the oldest environmental organizations in British Columbia) and co-founding Greenpeace. His later moves away from heady activism into the