It has been a long time since I’ve posted the part I of this article. If you’re new to this article be sure that you’ve read http://vibgy.com/2009/10/do-humans-responsible-for-climatic-change-part-i/. Now we’ll continue to explore if humans are really responsible for climatic change.
Continuing on the first hypothesis “Human growth is responsible for sensing climatic change”, the facts are abundant enough to prove that humans have grown to create devices to measure and sense the climatic conditions of this planet. So we can very well conclude that the first hypothesis is true. Let’s move on to the next one…
Human growth itself has caused climatic change:
This hypothesis is a very sensitive subject everywhere and so I tried to be unbiased as much as possible. If you see any biased perspective, please provide your valuable comments. Those who decline the charge that humans are responsible for the climatic change, put forward the claim that the relatively less amount of time humans spent on earth (which is 4.5 billion years old) couldn’t possibly destroy it. The claim is somewhat valid. The activities which we believe to be changing the climatic conditions of this planet are only 200 years old. This is after the industrial revolution after which we started emitting huge amount of carbon dioxide into the air. Global warming is something which causes all these climatic changes. And in scientists there are 2 groups one which support that human activities are responsible for the current global warming and the other one deny that we have very less contribution towards climatic change.
I was going through piles of data and theories about climatic change and found the below graph depicting the temperature record of the earth from millions of years ago. You can read more on how these records have been measure by going through this article : http://en.wikipedia.org/wiki/Geologic_temperature_record.
From the above graph we can observe that the earth has experienced pretty hot weathers millions of years ago. And as per predictions, there are traces that living organisms existed from 3.7 billion years ago. That’s quite a long journey actually. Its evident that life sustained in this planet through these major changes in the planet’s climate. But what we’re really scared of is if it could support humans during this climatic change. Let’s investigate further.
Please go through the following images:
Now from the above statistical records I’ve created an image overlay to see the correlation between them. Please check below:
Hope you can see the clear correlation between these 3 graphs. This is a pure probability that human population is a major contributor for the global warming. Another thing you must observe here is that the slope of these 3 curves go out of synchronization before 1975. This can be an evidence that heavy industrial activities contributed to global warming. So this concludes that the second hypothesis “Human growth itself has caused climatic change” is also true. The reason why I compared the temperature rise with the population growth instead of CO2 is that CO2 is not the only thing which is responsible for the global warming. When human population increases so does the population of the species which needs to support human life (crops, poultry, catle etc. etc.). Though the plants eat up CO2, they release a significant amount of methane when they are digested by earth. Methane is more effective green house gas than CO2.
There are so many things which some people agree and disagree. But we can not deny the collective effect of human population on this planet. What if we didn’t have all these technologies, medicine and farming techniques? Could we have exploded like this in population? How long can earth support human life? How many years will the resources in earth last (leave fossil fuels how about water)? Do you think the huge amount of sea water would be enough to support the human population increasing in this rate? There are so many questions we’re not knowledgeable enough to answer or not mature enough to digest the answers.
Now I want to raise a question will the “Go Green” efforts taken by countries, organizations and societies has anything to do with decreasing the effects of “Global Warming”? I’ll answer this in my next post. Thanks for reading. Give your valuable comments to improve the future posts.