Hi my name is Kaitlyn M. and I am in Sal’s period three POD class. An example of a positive externality is when people get a vaccine for a certain disease that they are prone to get so that later in their life they will most likely not be able to get the disease. One way the government is trying to help is by increasing the level of production beyond what would be chosen privately. An example of a negative externality is the use of hairspray. They say that using hairspray breaks done the ozone layer, and that also is the layer that protects humans from the sun’s ultraviolet rays. One way the government is trying to intervene with this negative externality is by outlawing the aerosol cans. I think the governemnt can really help if they fully set their minds to it and make it happen.