Down gravel roads in Chatham-Kent, Ontario, you can judge the changing of the seasons and the progression of time by the corn. Every July, throngs of teenagers head into the fields to detassel corn. It’s a rite of passage in Chatham-Kent — hats and gloves, thermoses full of water, corn rash, and heat stroke — all for summer wages. By August 1, Emancipation Day, the seed corn has been detasseled, and stands of sweet corn are speckled along roads and laneways to farms. A bell rings to signify the day, celebrating freedom. The rest of the corn in the area, mostly grown for silage, has reached toward the sun, and soon the harvest will come and the green of these fields will brown, marking the passage of time.