Since 1950s, fossil fuels supplied most of the world’ s energy needs. Further research by scientists has found some substitutes such as hydropower(Kelly lund,2002).

After World War Ⅱ, people have been exposed to at risk of environment pollution and shortages of nonrenewable energy sources.

Nowadays, some environmental issues, such as pollutants and greenhouse gases, have reduced our quality of living, due to the overuse of dirty energy.

We have found lots of renewable resources in recent years, such as so-lar power and nature gas which would protect our environment and re-duce the use of un-renewable resources.

Moreover, the amount of electricity generated depends on the strength of the wind. Without wind, there is no electricity, so it is largely affected by the monsoon (BBC).

Australia can be converted water to electirc about 13,816 gigawatt hours totally, which subsititute below than 0.5 percent of world electric consumed. (HARRIES, 2011)

As of energy such as, biogas has been harnessed effectively through the use of detritus and unwanted waste. Biogas uses the waste from food to generate heat, electricity and refine fuel for vehicles. The use of biogas can shorten the consumption of fossil fuel. According to Rosenthal, Biogas can reduce the cost of electricity and fuel of people in Kristianstad and also reduce the carbon dioxide emission in the city (2010). For example, Kristianstad had eliminated 64 tons of CO2 emissions by using wood pellets to generate the heat for greenhouse (Rosenthal, 2010). This strategy is very effective in Kristainstad because the fully support from the government such as district heating to cover the need of heat in the city. However, it would not be effective if the government did not support and take a serious action. This also includes the collaboration among citizen.

References

Grigorjeva, J. (2009). When will fossil fuel reserves be diminished? Energy Policy, p.181-189.Retrieved July 21, 2014, from http://www.academia.edu/4853226/When_will_fossil_fuel_reserves_be_diminished

Our Energy Sources—The Sun (2009). National Academies. Retrieved from http://needtoknow.nas.edu/energy/energy-sources/the-sun/

Department of ENERGY&ENVIRONMENTAL PROTECTION. (2014). Renewable Energy, Retrieved from http://www.ct.gov/deep/cwp/view.asp?a=4405&Q=513760&deepNav_GID=2121

SOLAR ROADWAYS. Retrieved July 21, 2014, from http://www.solarroadways.com/intro.shtml

WORLD BANK INDICATORS - NETHERLANDS - DENSITY & URBANIZATION 2010

Kelly lund,2002, Hydroelectric power, http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/eng4431

John Chan,2007, Chinese government acknowledges Three Gorges Dam “disaster” http://www.wsws.org/en/articles/2007/10/chin-o12.html

Itaipu Binacional,2003,Advantages of Hydroelectric Power Production and Usage http://water.usgs.gov/edu/hydroadvantages.html

Howard Perlman,2014,Three Gorges Dam: The world's largest hydroelectric plant water.usgs.gov/edu/hybiggest.html

BBC,2003,http://news.bbc.co.uk/1/hi/in_depth/photo_gallery/2955724.stm

Renewable Energy Sources in the United States. Nationalatlas. Retrieved from http://nationalatlas.gov/articles/people/a_energy.html

Solar, Wind, Hydropower: Home Renewable Energy Installations. (2013a). U.S Department of Energy. Retrieved from http://energy.gov/articles/solar-wind-hydropower-home-renewable-energy-installations

Passive Solar Home Design. (2013b). U.S Department of Energy. Retrieved from http://www.energy.gov/energysaver/articles/passive-solar-home-design

NASA (2012, June 18). from http://cosmicopia.gsfc.nasa.gov/qa_sun.html

BBC(2006, November 31 from http://www.bbc.co.uk/blogs/legacy/newsnight/2006/11/are_domestic_wind_turbines_an_ecocon.html