Blog #1: David Lehn
During class, we talked about how what was normal and healthy blood pressure thirty years ago is not the normal and healthy blood pressure now. Over time, what was normal and healthy can completely change. As we gain more information and knowledge on a subject, our viewpoints of what is normal and what isn’t can change. Not only does this happen in health, it happens in the environment.
Above is a before and after picture of Arctic Sea ice. This is a twenty-eight year difference. The normal sea ice level in 2012 would be an extreme low in 1984. This shows that over years, the normal sea ice level changed dramatically, just like blood pressure. The changing of what is normal and what is extreme is terrible for our environment. Over the past ten years, the Arctic Sea ice levels have not changed dramatically. In fact, the sea ice level has gone up the past year. This doesn’t mean that the levels we see today are normal, but since we compare them to a short period of time, we see it as okay. It is not okay. If we compare the levels today to the levels from around thirty years ago, we see that it is definitely not normal. It is an enormous change and at an all time low.
Even though we see that the Arctic Sea Ice is extremely low and continues to dissipate, we don’t think that it is a problem. It is normal to our generation for the ice levels to be this low. We don’t think we need to change what we are doing to stop the melting of the ice. If we change what we see is normal to what it was twenty-eight years ago, I think more people will notice that the ice is extremely low and that something needs to be done to stop the melting of the ice.