Farming and Agriculture are rapidly evolving and constantly being made better. From the machinery getting bigger and faster, to the science behind farming becoming more understood, all aspects of this method that keeps all of us alive, are very fast pace.
All throughout history, farms have been settled along bodies of water for easy access. In the 1840's, when Mormons in Utah dammed the river in order to flood their fields to soften the soil, they discovered the real benefits of irrigation. Water produced thriving plant growth throughout the desert. Congress took this into consideration and ended up passing several law in the few after to assist farmers in making costly irrigation systems.
"What's on my food" is presented by "Pesticide Action Network" or PAN. They protest the uses of pesticides. Check it out: http://www.panna.org/
Growing crops is usually thought to be outdoors, in a field, but we have changed that. Now, people grow their plants in greenhouses or in buildings with UV lights. This new way of raising crops is very efficient because you are able to grow food through all seasons, hot or cold.
As time goes on, this method is getting more and more popular.