The food systems include food production, processing, packaging, storing, transportation, distribution, advertising, consumption and food waste (1). Our current global food systems have significant negative impact on the environment and increase greenhouse gas emissions (GHGEs) (1). More specifically, they produce 19% to 29% of GHGEs globally (1). GHGEs is one of the major factors of global warming, which rises by about 3% each year (1). It is a serious...