Monday, May 25, 2009

Global Warming and ecological decline - Task7



The global warming is a new expression which means the increase in the average temperature of the Earth.
To address this matter we should go back to the source; many scientists attribute these phenomena to the excessive industrial waste of carbon dioxide emissions.
Most of the scientists do agree that there is mounting evidence which continues to accumulate that Carbon dioxide or CO2 from fuel burning is causing interference in the earth’s climate, resulting in the earth’s temperature rising, according to their latest studies.( http://www.env.gov.bc.ca/epd/bcairquality/glossary/index.html).
They found that some of the glaciers with ice thousands of years old are disappearing and melting at an alarming pace and the average temperature of the earth is rising with what they refer to it as the Greenhouse Effect, which traps heat in the lower part of the earth’s atmosphere, causing the temperature to rise (http://news.bbc.co.uk/1/hi/sci/tech/4315968.stm)
Normally earth receives energy from the sun in the form of radiation; earth in return reflects about 30% of the incoming solar radiation. The remaining 70% is absorbed, warming the land and the ocean.
For the earth's temperature to be steady the earth does not fluctuate rapidly between hot and cool. Therefore, any changes in the 30% or the 70% range will have a great effect on the balance of nature. (http://yaleglobal.yale.edu/environment/?gclid=CIv_4vTxzJoCFYV_3god6H_0RQ)
The scientists’ studies attribute the earth getting hotter to excess carbon dioxide emissions into the atmosphere, which will result in disasters like hurricanes, droughts and floods becoming more frequent as it was noticed in the last 100 years; because the average temperature of the air near the earth's surface has risen a little less than 1 degree Celsius according to the latest data.
This rapid increase in the earth temperature is man-made, not caused by a natural fluctuation of the earth’s climate due to the solar cycles and natural climate changes.
So it's up to all of us to extend a helping hand to our earth which is the only place in the universe so far we could survive, by reducing our carbon dioxide emissions, growing more trees and not destroying our forests.



Bibliography:
1-
http://www.websters-online-dictionary.org/Gl/Global+Warming.html
2-
http://yaleglobal.yale.edu/environment/?gclid=CIv_4vTxzJoCFYV_3god6H_0RQ
3-
http://news.bbc.co.uk/1/hi/sci/tech/4315968.stm
4-
http://www.env.gov.bc.ca/epd/bcairquality/glossary/index.html
.

Thursday, May 7, 2009

Task6: Cool Cities



The industrial revolution began in the seventeenth century but there have been some problems associated with economic development. Some of these problems are the rise in population, increase in energy consumption, which usually leads to the increase in carbon dioxide emissions to the air, and traffic delays. If we don’t solve these problems we will need another planet to live in. So we need to decrease the carbon dioxide emissions by 50% to be safe.
Almost all of the carbon dioxide emissions are coming from buildings and transportation which form around 90%. Nowadays technology built for us buildings that will reduce 50% of the carbon dioxide in the air and the residential buildings will reduce 30%. These buildings are Cool Cities; Cool Cities are built by Japan. There are three types of transportation that will be used in the Cool City, like hybrid cars, water taxis and light rail. Business, Cultural and Residential are the various zones in the city. There are some techniques that will reduce heat by water, trees and roof membranes.

In my opinion, this idea is the best or the good to decrease the pollution and to decrease the carbon dioxide. Also this city will be the best place for living specially because this place has a good atmosphere which is created by using cold water and fresh air from trees and plants.