Apple orchards rent thousands of bees…

Apple orchards rent thousands of bees in hives from bee keepers to pollinate their trees in the spring. After a couple weeks when the trees have been pollinated the bee keeper comes back for his hives and transports them to the next orchard in need.

Humans used crop rotation 8,000 years…

Humans used crop rotation 8,000 years ago. As far back as 6000 BC, farmers alternated planting crops each year. They did not understand the chemistry, but knew that doing so kept the soil healthy for good harvests.