Cutting, digging, picking, stripping, shaking, and raking--whatever the crop, there's a custom machine to harvest it. It all began with handpicking and today it's often one man and one machine harvesting hundreds of acres in a single day. The farmer may even get a little help from satellites. Far above the earth, high-resolution photography is giving the grower more opportunities to cut costs and maximize the harvest. From the debut of the sickle in ancient Egypt to McCormick's famous Reaper to the field of ergonomics that assists human harvesters, we'll dig into the past and future of the harvest.