Lighting is an important part of our lives. Without light, humans could not survive because without light, plants could not grow and the food chain would collapse. Good lighting is essential for visibility, safety, comfort, and productivity. Indoors, lighting must be designed and balanced to create effective work and living environments. Different types of lights do different things. Glare reduction, task and accent lighting are all important design elements. Ambient lighting helps to brighten up a space. Outdoors, lighting is even more vital. Street lighting helps us to travel more safely at night, while park and garden lighting can allow us to appreciate our surroundings even after dark. Security lighting can help to deter criminals. Recent advances in lighting technology have opened up many opportunities to reduce our energy use. LED lighting is becoming more widely used. Not only is it up to 80% more efficient than standard incandescent lighting, but it can also produce some stunning effects. Smart lighting systems allow us to adjust the level of lighting in a room depending on the time of day or the activity. Lighting is no longer just a utilitarian necessity; it can also have a huge impact on how we live. With careful design and thought, we can create a much better experience for ourselves with lighting.