text: I think FACS can actually be valuable in classrooms. A teacher can detect weither a student is happy,sad,angry, or surprised. It can be very useful for students that when they want to talk to thier teachers but don't know how to explain themelves this can help. FACS can help out in many more ways, useful ways. So my statement is this technology to read the emotion expressions of students in a classroom is valuable and I also think students would enjoy trying it out.When it comes down to air pollution cars are one of many the factors that lead to air pollution. The pollution made by cars could start smog to build up in major cities and suburband areas. This can become a major factor in many other developed countries. There is one way we could put a end to this and that is to limit car use.