Organic foods are foods that are produced using methods that do not involve modern synthetic inputs such as synthetic pesticides and chemical fertilizers. Organic foods are not processed using irradiation, industrial solvents, or chemical food additives.
The weight of the available scientific evidence has not shown a consistent and significant difference between organic and more conventionally grown food in terms of safety, nutritional value, or taste.
For the vast majority of human history, agriculture can be described as organic; only during the 20th century was a large supply of new synthetic chemicals introduced to the food supply. The organic farming movement arose in the 1940s in response to the industrialization of agriculture known as the Green Revolution.