The document discusses the Green Revolution which refers to initiatives between the 1960s and 1980s that viewed agriculture as commercial rather than subsistence. It involved the use of high-yield variety seeds invented by Norman Borlaug to greatly increase food production. Methods included multi-cropping, superior seeds, irrigation, pesticides, fertilizers, and machines. The Green Revolution led to increased production and economic growth but also issues like pollution, soil erosion, disease, and unemployment. While saving lives, it was not environmentally sustainable long term.