I will be teaching the first one as a big idea for my classes as well because I feel it is important that students know that there is an excess of CO2 and there is a correlation with that and climate change.
Of course if there is a problem we are creating, there are solutions and different ways to get resources that aren't as harmful. I am going to focus mainly on energy consumption of individuals, do you plan on covering a lot of different alternatives and briefly going over them?