The barcode is first used to identify products in grocery stores.
But it isn’t until 1974 that a barcode scanner is installed in a store in Troy, Ohio.
The first product that included a barcode was a pack of Wrigley's gum.
Agriculture ushers in the Green Revolution by developing high-yield varieties of rice and wheat.
By 1970, global production has risen by 20 percent and helped curb starvation.