Wellecome!

This space is intended to be useful during this extraordinary course of Environmental Systems and Societies. A subject such as this demands specific and detailed data about how the environment is formed and how it works, besides the most recent and relevant events regarding ecological issues. And what could be better than a blog to have and share all this information. I hope all posts will be useful to create an ESS thinking; also I am looking forward to learn from the comments you leave.

lunes, 4 de octubre de 2010

About human population....

As we said in the last post, the human population is now around six billion people, and growing.
This is a graph of how the population has been (with an interesting little note), and how it seems to be in the future:

(I took this image from the page of Gerald G. Marten: if you have the chance look at it: it have very intersting graphs about population growth, specially human population.)


But looking again to the graph it can be stated that the human population follows a J-curve growing.


We must take into account that human population is very diverse, and certainly in measuring it (specially in qualitative measures) we must consider a lot of factors before interpreting or using this data.



The Human Development Index is an index (duuh) adopted by the UN Development Programme as a measure of the well-being of a country. It combines factors such as: Education, Life expectance, Standards of living, Income, Gross Domestic Product (GDP) per capita, access to health services between others.


By taking this classification, countries can be divided in MEDCs (more economical developed countries) and LEDCs (less economical developed countries) 

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