Showing posts with label Technology. Show all posts
Showing posts with label Technology. Show all posts
Why developing renewable energy sources is a must
1) The term "renewable energy" is not new to all of us. We know that renewable energy like solar, wind, biomass, and hydroelectric energy are better and more efficient compare to non-renewable energy like coal, petroleum and natural gas.
2) But there is a hard truth when it comes to developing renewable energy, the cost of making those solar panel, wind turbines and building those hydroelectric dam is simply too high.
3) The price of crude oil rose to all-time high last year June (which is $147). This is good because it forced energy companies to switch focus to generate electric power from solar panels and wind turbines. Unfortunately, the price of crude oil fall to around $40 now. This will slow down the development and progress of renewable energy.
4) According to Infoplease.com, the world's population in the year 1950 is 2.55 billion. As of February 2009, world's population is estimated to be 6.75 billion. The significant increase in world's population is due to several reasons. The advancement in science and technology has saved many life. Besides that, the healthcare system also enabled poor to receive healthcare service. Therefore, the demand for electricity will be overwhelming. People are using electricity in many ways, such as to power Air-Conditioner, light up the light bulb, and using the water heater. If we want to make sure energy production can match energy consumption, we have to commit ourselves to developing clean energy instead of increase our dependence on fossil fuel.
Future - Hybrid Cars
2)Among those hybrid cars are hydrogen vehicle, solar vehicle and electric vehicle.
3)The concept of hydrogen-powered cars is quite simple. The hydrogen is reacted with oxygen to produce water and electricity. The electricity produced is used to power an electric motor.
a hydrogen vehicle. Picture taken from Wikipedia
4)The future of electric cars is also very promising because electric engine convert 75 percent of available energy into forward motion, compared with the 20 percent energy conversion rate of gasoline engines.
5)For solar cars, I don't believe the future cars can run entirely on sunlight, but the energy generated from photovoltaic cell can provide additional energy for a hybrid car.
Paperless Age
In the January 2009 issue of printed edition PC Magazine, the editor-in-chief announced that the January 2009 issue is the last printed edition of the PC Magazine publication.
From February onwards, PC Magazine will become a 100-percent-digital publication. PC Magazine publication will offer PC Magazine Digital Edition to its subscriber.
Besides that, the Wall Street Journal also offer similar Digital Edition to its subscriber to replace the printed edition.
In Malaysia, www.malaysiakini.com which publish articles online offer subscription of RM15 per month for those who want to read its full articles.
In conclusion, I believe in the future,more and more magazines and newspapers will follow the trend. In fact, this is good for the environment because it don't need the paper so it can save trees.
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