The five minute film can be watched on youtube and features breathtaking aerial photography. It is narrated by Paul McCartney with appearances from Paul, Mary and Stella McCartney, Woody Harrelson and Emma Stone.
The Meat Free Monday campaign was launched in 2009 by the McCartneys and has become incredibly popular - especially in schools. It works in collaboration with Eating Better, a member of Sustain.
The film One Day a Week is largely funded by Bloomberg Philanthropies and produced in collaboration with the French film director Yann Arthus-Bertrand.
Sustain: Sustain The alliance for better food and farming advocates food and agriculture policies and practices that enhance the health and welfare of people and animals, improve the working and living environment, enrich society and culture and promote equity.