Lighting, also known as illumination, is the deliberate use of light to achieve a practical or aesthetic effect. Lighting includes the use of both artificial light sources such as lamps and natural illumination of interiors from daylight. Proper lighting is important for both practical and aesthetic reasons. Lighting in an interior space affects how people move within the space. A well-lit room allows people to see where they are going and what they are doing, which can be useful to people who are finishing tasks. It also affects the overall mood of the space. Warm lighting for intimate conversations or bright lighting for preparing a meal are both important. Lighting can also have a major impact on the aesthetics of a space. The type of light fixtures used, such as track lighting, wall sconces, and recessed lights, and the color temperature of the light, can both have an effect on the overall look and feeling of a space. The type of lighting used in a space can also affect energy usage. Energy efficient lighting is important for both environmental and economic reasons. LED and CFL bulbs not only use less electricity, but also last longer, therefore saving money in the long run. Lighting is an integral part of any space, both practical and aesthetically, and should be considered carefully when designing or renovating a space.