Jan. 8th First Class--first impression

Today is the first day I start to know the sustainable life. We have a speaker who come from the website company "mypeg".

http://www.mypeg.ca/

I tried to use this website to find out some of data, and shows out it is a wonderful website. It shows a lot of data of Winnipeg, and from many different perspectives.
Sustainability According to the dictionary, the sustainability were defined by: for humans, sustainability is the potential for long-term maintenance of well being, which has ecological, economic, political and cultural dimensions. Sustainability requires the reconciliation of these environmental, social equity and economic demands - also referred to as the "three pillars" of sustainability or the 3 Es.Sustainability for me I think it is one spirit which means we need to keep our environment, and protect our living environment. The purpose of that is keep good enough living condition for our offspring. Also, we need to protect the environment, and let it still exist after every generation.When I was in middle school, the teacher told us sustainability means we need to protect the environment. However, after these years, I can feel about sustainability everywhere in my life. For instance, sustainable economics, sustainable happiness. Also, I think those different perspectives of sustainable represent human become more and more pay attention to protect the world. Although we can easy find a lot of people trying to live forever from the history. After seek the method for living forever, human want to protect their living environment. Here is a very interesting video which I found online, and it shows how "sustainability" formed by people. 
http://www.youtube.com/watch?v=B5NiTN0chj0

This graph shows the how sustainability formed by social, economic and environment.

From our lecture
Four Ideas
1. we must consider the effects of our actions
2. earth's resources are not present in infinite supply, we must live in limits.
3. we must understand all the costs to the environment and the society.
4. we must each share in the responsibility for environmental sustainability.


Ecological foot-print

We talked about the foot-print a little bit in our class. And I was very interested in it, so I search the definition of it online.
The ecological footprint is a measure of human demand on the Earth's ecosystems. It is a standardized measure of demand for natural capital that may be contrasted with the planet's ecological capacity to regenerate. It represents the amount of biologically productive land and sea area necessary to supply the resources a human population consumes, and to assimilate associated waste. Using this assessment, it is possible to estimate how much of the Earth (or how many planet Earths) it would take to support humanity if everybody followed a given lifestyle.