Why is important to find alternative energy sources?

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In addition to the above answers, which are all valid and important points, we can also look at this from a national security and independence viewpoint.

We import 2/3 of the oil we use, and much of that comes from unstable countries (Nigeria, Iraq), or nations under the rule of a dictator (Saudi Arabia, Kuwait) where human rights violations are common.  We have had forces in and around Iraq for decades now, in order to secure this resource, which is very expensive, costly in terms of life and limb, and has the side effect of encouraging radical Islam.  So one could argue that alternative energy could free us from dependence on these regions, and the foreign policy consequences that come with that dependence.

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It is very important to do this for two reasons.

First, and perhaps most important, we are in danger of ruining the planet's climate through carbon dioxide emissions. If we continue to use fossil fuels, we may increase the temperature of the planet in ways that will harm us and our entire ecosystem.

Second, we cannot keep using fossil fuels forever. They will eventually run out, even as the population of Earth grows.

For both these reasons, we need to find other sources of energy that do not emit carbon dioxide when used.

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Why we should develop alternative energy sources?  

We are mostly dependent on fossil fuels (such as coal, petroleum, and natural gas) for our energy requirements, whether it is for electricity or heat or for our automobiles. Fossil fuels have a number of issues, such as their limited supply and their environmental impacts. Fossil fuels take millions of years to form and hence cannot be regenerated in a reasonable time frame once used (and hence the name nonrenewable resources). Thus, there is a limited supply and we are running out fast. Their combustion results in the production of greenhouse gases, such as carbon dioxide, which is responsible for global warming and climate change. For these two primary reasons, we need to find alternatives to conventional fuels. Some of the options currently being used and further developed include solar energy, wind energy, etc. 

Hope this helps. 

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Why are scientists are developing alternative energy resources?

There are a lot of possibilities:  

  1. We are going to (someday) run out of our current energy resources.  Much of the world's energy depends on fossil fuels, and those are finite resources.  Once they are used up, that's it.  An alternative energy source will have to be used.  Scientists know this, and they are trying to work ahead of the coming problem.  
  2. They are curious.  Scientists are inquisitive people by nature, so looking in to new technology and energy resources is satisfying their curiosity.  
  3. They are hoping to discover something amazing, patent it, and get rich.  A person that figured out an almost unlimited fuel source that is cheap and easy to use and maintain would likely become one of the richest people in history.  
  4. They are environmentally conscious.  This is similar to #1, but it could be different in a key area -- pollution.  Fossil fuels and their burning pollutes a great deal.  Many new energy resources could be renewable and clean.  
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Why is it necessary to find alternative sources of energy?

Most of our energy requirements are fulfilled by fossil fuels including coal, petroleum and natural gas. Coal and natural gas are the primary fuels for electricity generation and various petroleum products (such as petrol or gasoline and diesel) are used for transportation (in automobile engines). There are some issues with the use of these fuels. They take millions of years to form and hence are in limited quantity. Given our continuously increasing demands for energy, these fuels will likely be exhausted in the foreseeable future. These fuels also generate a number of gases, some of which (such as carbon dioxide) are greenhouse gases and contribute to climate change and global warming.

Thus, there is a serious and urgent need to find alternative sources of energy. These sources must be cleaner and should ideally be renewable. 

Hope this helps. 

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Why is it important to use alternate sources of energy?

Conventional sources of energy such as coal, natural gas, petroleum, wood, etc. are all carbon-based fuels and mostly are fossil fuels. Their significance to our development cannot be underestimated, however they do have certain disadvantages:

  • Climate change: The biggest drawback of using fossil and/or conventional fuels is the amount of carbon dioxide they release upon combustion. As we know, carbon dioxide is a greenhouse gas and is a prominent contributor to global warming and climate change. 
  • Limited quantity: Fossil fuels are formed over millions of years and have a limited quantity. However, our rate of fuel consumption has been rising over the last century and has become unsustainable. In other words, at our current level of conventional fuel consumption, we may run out of them in the next few decades (depending on the fuel in question).
  • Cleaner fuel: Fossil fuels generate gases and some produce a lot of solid residue (fly ash from coal, etc.) as well. All these combustion products need to be disposed of as well, adding to the cost of fuel consumption.
  • Unequal distribution: Fossil fuels are unequally distributed among various geographical regions and this leaves the possibility of some countries holding the world at ransom (similar to oil crisis of 70's).

Alternate fuels are cleaner, widely distributed and do not generate carbon dioxide (during usage) and hence are more environmentally-friendly.

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 Why do you think it is important to develop alternative energy sources?

Alternative energy sources are non-conventional energy sources. That is, sources other than the commonly used energy sources. Human beings commonly use fossil fuels (such as coal, natural gas, diesel, gasoline, etc.) as sources of energy. However, these sources will not last forever. In fact, we are in danger of running out of oil and coal in the next few decades. Environmental degradation is another concern associated with the use of conventional fuel sources. Fossil fuels generate carbon dioxide on combustion, and this greenhouse gas causes global warming and climate change. Many places are dependent on a select few countries (such as countries in the Middle East and Asia) for most of their oil requirements. Such a monopoly is a cause of economic and strategic concern and has already led to a global oil crisis and conflicts. 

To avoid all these issues, alternative energy sources are needed. Some examples of such energy sources include solar energy, wind power, wave energy, etc.

Hope this helps. 

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Why are alternative energy sources important?  

Conventional energy sources include coal, petroleum and natural gas. These energy sources currently fulfill most of our energy demands, including electricity, heating, and transportation fuel. These have two important drawbacks. These fuels, also known as fossil fuels, are limited in quantity. Since we are heavily reliant on fossil fuels and they take millions of years to form, we are running out of them. Secondly, fossil fuels generate carbon dioxide, a major greenhouse gas thought to be responsible for global warming. Thus, limited quantities and greenhouse gas emissions make conventional fuels somewhat undesirable. 

Alternative energy sources are mostly renewable, including solar, wind, and geothermal energy. These energy sources do not generate any greenhouse gases and hence do not contribute to global warming. Additionally, as renewable sources, they are practically unlimited in quantity, meaning they could help solve our impending energy crisis.

Hope this helps. 

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