Food is any substance, usually composed primarily of carbohydrates, fats, water and/or proteins, that can be eaten or drunk by an animal for nutrition or pleasure. Items considered food may be sourced from plants, animals or other categories such as fungus or fermented products like alcohol. Although many human cultures sought food items through hunting and gathering, today most cultures use farming, ranching, and fishing, with hunting, foraging and other methods of a local nature included but playing a minor role.Most traditions have a recognizable cuisine, a specific set of cooking traditions, preferences, and practices, the study of which is known as gastronomy. Many cultures have diversified their foods by means of preparation, cooking methods and manufacturing. This also includes a complex food trade which helps the cultures to economically survive by-way-of food, not just by consumption.Many cultures study the dietary analysis of food habits. While humans are omnivores, religion and social constructs such as morality often affect which foods they will consume. Food safety is also a concern with foodborne illness claiming many lives each year. In many languages, food is often used metaphorically or figuratively, as in "food for thought".

The cornucopia of rice, wheat, beans, sorghum, sweet potatoes, lentils, chick peas and a host of other food, forage and agroforestry plants is to be safeguarded in the facility, which was created as a repository of last resort for humanity’s agricultural heritage.

Prospective studies have recently been published showing possible benefits of flavonoids for the reduced risk of cardiovascular disease. Flavonoids, which are found mainly in fruits, vegetables, and other plant foods, have long been touted for their health benefits. More than 5,000 individual flavonoids have been identified in plants,

Cat food is manufactured for consumption by kittens and cats. Although cats are carnivores, most commercial cat food contains both animal and plant material, supplemented with various vitamins, minerals and other nutrients.

Bees pollinate up to one third of our food plants, and in recent months, bee colonies have been mysteriously collapsing. Up to 70% of bees on the East coast have disappeared, and about 50% in other parts of the country. One recent news account from New Hampshire says this: "The problem, called colony collapse disorder, already has hit beekeepers in

By definition, an "invasive" species is a non-native plant, animal or other organism that, once introduced into a new environment, outcompetes native species for habitat and food. Although not all exotic species are invasive, those that are can cause tremendous problems.