Light is a source of energy that the earth needs. It is necessary for the survival of animals and plants on this planet. Light is produced by the sun and is also present in some forms of artificial lighting. It is one of the most important sources of energy for humans and we depend on it for many activities such as growing crops, heating our homes, and keeping our lights on. Light plays a major role in many aspects of our lives. It helps to set the natural circadian rhythm which helps us to stay alert and focused during the day. Natural sunlight helps to boost Vitamin D production in our bodies, which is essential for our physical and mental wellbeing. It also helps our bodies to create the hormone melatonin, which is needed for sleep. Light also imopacts our mood. Natural sunlight can help to boost our mood and make us feel more positive and energized. It can also help to reduce stress levels and improve our sleep. Studies have shown that people exposed to natural sunlight during the day have less trouble sleeping and wake up more rested. Artificial lighting can also be beneficial in some ways. It can be used to increase productivity in the workplace, and can also help to provide an aesthetic ambiance in a room. In conclusion, light is essential for the Earth to function properly and for us to perform our every day activities. It is important to get the right amount of natural and artificial light in order to have a healthy lifestyle.