Sustainable agriculture

According to wikipedia, sustainable agriculture is the practice of farming using principles of ecology, the study of relationships between organisms and their environment. It has been defined as "an integrated system of plant and animal production practices having a site-specific application that will last over the long term:

• Satisfy human food and fiber needs
• Enhance environmental quality and the natural resource base upon which the agricultural economy depends
• Make the most efficient use of non-renewable resource and on-farm resources and integrate, where appropriate, natural biological cycles and controls
• Sustain the economic viability of farm operations
• Enhance the quality of life for farmers and society as a whole.

 This short movie, entitled "Back to the start" shows the unnatural conditions of farming and agriculture nowadays. And how  beneficial for both nature and mankind would be to go "back to the start". The soundtrack of the video is the song "The Scientist" performed by Willie Nelson. you can read the lyrics here