Most people do not realize how many lights they have in their house.  Lights use up a lot of energy, emmiting CO2.  Many people have so many lights in there house, that when put together even just leaving lights on accedentaly for a couple of hours emits a lot of CO2.  Our light sources use up a lot of energy, so we need to use it as little as possible, and try not to have as many.

From my personal experience, I can say this is true. About 2 years ago, my family and I made a decision to save energy. Before this decision, we would leave lights on after we left the room and all our lights were incandescent lights. After we made the decision to save energy, we noticed an incredible improvement (through taxes).  We changed many of the lights to LED lights and we made an effort to close lights after we left a room. Although we forgot to close the lights most of the time, even closing the lights sometimes made an improvement. I believe everyone should try their best to close lights when not in use and should also change most of their lights to LED lights.

I agree. The use of lights, in my opinion, is one of the more overlooked things that can greatly contribute to a worse environment. Many people leave a large number of lights on in their houses day in and day out, not even thinking about the effects of how they could be hurting the environment. With leaving lights on so much comes with a considerable amount of wasted electricity and a high amount of carbon dioxide emissions going into the air. People need to be educated about the small ways they could be hurting the environment.

This is true. My family and I used to leave the lights on sometimes even if we are not using it because we feel lazy to sometimes.  For the past few years, instead of using light as much, we used the sunlight through the window rather than lights to decrease the amount of carbon released. We also turn off the lights when they are not needed. We also recently changed majority of our lightbulbs to LED bulbs.

Uses lights hurts the environment but also costs more money than keeping them off. This opportunity for financial gain is a good incentive to use less light and electricity because even if someone does not particularly care about the environment if you educate them on how they can save on their electric bill, you can find many more people willing to conserve energy. Our homes take up a lot of energy, and in the link below it shows just about how much in a short 3-minute video.
https://www.youtube.com/watch?v=VuuYCh-PICs

I agree that using lights use up way too much energy. Also, people keep way to many lights in their house on for way too long. Forgetting to turn off a light every once in a while is understandable, but keeping multiple lights that aren't in use on all day is just wasteful. Simply turning off lights when we aren't in the room or opening a window to get sunlight instead of artificial light can greatly reduce the amount of energy used in houses. Also, using energy efficient bulbs like LEDs help along with having local, sustainable sources of energy such as solar panels.

Agreed. Lights consume a large amount of energy, which is detrimental for many reasons. Namely, however, an important reason would be the large electricity use it racks up, which must be pulled from plants that burn fossil fuels, which detrimentally release large amounts of carbon dioxide per year. When my family constantly used to leave the lights on, the power bill would provide a rating on how efficient we were; there was, indeed, a relation that the higher our light usage, the worse our efficiency rating was.