How does Light Pollution affect the world?

Light pollution makes astronomy extremly hard and makes sleeping difficult. Light pollution also affects animals and could make them sick. Also, light pollution is a problem, because it consumes a lot of power. To stop light pollution, just turn off your lights at night. If you own a building, do not illuminate your building and turn off your lights. If you work in a buildng and have to work late at night, close the blinds so light doen't escape the building.