Eco-Kashrut, also called the Eco-Kosher movement, is a movement to extend the Kashrut system, or Jewish dietary laws, to address modern environmental, social, and ethical issues, and promote sustainability. This movement began in the 1970s among American Reconstructionist Jews, and eco-kashrut or eco-kosher approaches enjoyed a resurgence in the 1990s with the work of Reconstructionist rabbi, author, and activist Arthur Waskow. A third wave of the eco-kashrut or eco-kosher movement began in the mid-2000s, spurred on in part by a series of kosher production facility scandals.