Global warming is the continuous increase in the atmospheric temperature of earth causing negative climatic changes. Rise in temperature is caused by the fossil fuels, industries, agricultural processes, increasing emissions of greenhouse gases (carbon dioxide, methane, nitrous oxide, etc) because of the burning of wood, solid waste, fossil fuels, etc. In order to reduce the effect of global warming we should limit our need of agriculture, deforestation, mining, industrial production, etc. we should do re-plantation of the plants to a great level to reduce the side effects of deforestation. We should replant the genetically engineered plants and replenishment of oceans with algae which are efficient to recycle the carbon dioxide in the atmosphere.