The Green Revolution in India refers to the period in the 1960s-70s when agricultural productivity increased dramatically due to the adoption of new technologies and high-yielding varieties of seeds, brought about through initiatives like those of M.S. Swaminathan. This helped increase food grain production, especially in states like Punjab, Haryana, and Uttar Pradesh. However, long term problems arose due to overuse of chemicals, loss of biodiversity, rising costs for farmers, and increased regional disparities between areas that could benefit and those that could not.