In order to reduce the greenhouse effect, humans employ several strategies, such as recycling appropriate materials, keeping lights off when not in use, driving less and reducing electricity consumption. Taking small steps, such as turning off televisions and appliances when not in use and switching to energy-conserving light bulbs, reduces demand for electricity, and burns fewer fossil fuels, which are the leading contributors to the greenhouse effect.
In the winter and summer months, reducing air conditioning and heat consumption lessens the greenhouse effect, too. These units produce carbon dioxide, which enters the atmosphere and contributes heavily to the greenhouse effect. Sealing doors and windows retains heat in the winter and cools homes in the summer, ultimately requiring less heat and air conditioning. Planting trees and shrubs and encouraging energy use reduction from others helps reduce the greenhouse effect too.