Last week we learned about climate change and population density.
When learned about climate change, we learned that our planet’s climate is getting warmer because of an increase in carbon dioxide and other green house gasses as shown on the graphs below.
The ‘greenhouse effect’ is caused by short wave radiation (UV rays) from the sun going through our atmosphere and heating up the ground. The ground in turn emits long wave radiation that gets trapped by greenhouse gasses in the atmosphere. Thereby, heating up the globe like a green house.
Because of this ‘greenhouse affect’ the whole world’s temperature has raised 2 degrees higher then it has ever been. Now, two degrees may not seem like much but, this has caused the glaciers to start to melt, fertile land start to turn into desert and more hurricanes starting to form.
Most of the greenhouse gasses on this graph are from solid and liquid fuel. For example, coal is a solid fuel and gasoline is a liquid fuel. But we also have to think about our embodied emissions. These are emissions from our every day product from the stores. These products sometimes line up an big line of carbon emissions just to get to our shelf. Here is one example, the factory creates the product (CO2 from electricity and product production) then it goes to transportation (CO2 from combustion engines) then the retailer store (CO2 from electricity used to run and heat the store) and lastly driving to the store (CO2 from your combustion engine).
To stop global warming, things we could do as individuals include: voting for politicians with an eco-friendly platform, walking/biking to work/school or driving an electric car, buying local and buying things with fewer packaging (don’t buy those individually wrapped potatoes!!!) and generally only getting what you need.
Stopping climate change is hard and some things we just can’t change. For example, big coal/oil companies will not shut down because their wealthy owner is just too greedy to lose out on all the money in their industry. This is one of the ways climate change becomes an issue of class. Some things only the wealthy can change and I think it is their responsibility to change it.
Now I was going to write about what we learned about population density but this blog post has already gotten too long. If you want to come talk to me later Mr.Chan, I would know what I am talking about regarding population density.