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There are many solar power advantages worth noting. In no particular order (well, perhaps simply the order in which they come to mind), here are some of the top advantages:

Solar power helps to slow/stop global warming. Global warming threatens the survival of human society, as well as the survival of countless species. Luckily, decades (or even centuries) of research have led to efficient solar panel systems that create electricity without producing global warming pollution. Solar power is now very clearly one of the most important solutions to the global warming crisis.

Solar power saves society billions or trillions of dollars. Even long before society’s very existence is threatened by global warming, within the coming decades, global warming is projected to cost society trillions of dollars if left unabated. So, even ignoring the very long-term threat of societal suicide, fighting global warming with solar power will likely save society billions or even trillions of dollars.

Solar power saves you money. Putting solar PV panels on your roof is likely to save you tens of thousands of dollars. The average 20-year savings for Americans who went solar in 2011 were projected to be a little over $20,000. In the populous states of New York, California, and Florida, the projected savings were over $30,000. In the sunny but expensive paradise known as Hawaii, the projected savings were nearly $65,000!

Beyond solar PV panels, it’s worth noting that solar energy can actually save you moneyin about a dozen other ways as well — with proper planning and household design choices.

Solar power provides energy reliability. The rising and setting of the sun is extremely consistent. All across the world, we know exactly when it will rise and set every day of the year. While clouds may be a bit less predictable, we do also have fairly good seasonal and daily projections for the amount of sunlight that will be received in different locations. All in all, this makes solar power an extremely reliable source of energy.

Solar power provides energy security. On top of the above reliability benefit, no one can go and buy the sun or turn sunlight into a monopoly. Combined with the simplicity of solar panels, this also provides the notable solar power advantage of energy security, something the US military has pointed out for years, and a major reason why it is also putting a lot of its money into the development and installation of solar power systems.

Solar power provides energy independence. Similar to the energy security boost, solar power provides the great benefit of energy independence. Again, the “fuel” for solar panels cannot be bought or monopolized. It is free for all to use. Once you have solar panels on your roof, you have an essentially independent source of electricity that is all yours. This is important for individuals, but also for cities, counties, states, countries, and even companies. I was recently in Ukraine touring various cleantech initiatives and projects. While there, I discovered that Ukraine in recent years has saved approximately $3 billion in reduced oil and gas imports from Russia thanks to the solar power plants developed by a single developer. Impressive.

Solar power creates jobs. As a source of energy, solar power is a job-creating powerhouse. Money invested in solar power creates two to three times more jobs than money invested in coal or natural gas. Here’s a simple chart on that point:

So, there are 7 big solar power advantages that you should remember and share. There are actually several more, but I think we can leave it at that for today. Let’s move on to solar power disadvantages….

Solar power disadvantages are actually not so plentiful. In fact, there’s only one notable disadvantage to solar power that I can think of. That disadvantage is that the sun doesn’t shine 24 hours a day. When the sun goes down or is heavily shaded, solar PV panels stop producing electricity. If we need electricity at that time, we have to get it from some other source. In other words, we couldn’t be 100% powered by solar panels. At the very least, we need batteries to store electricity produced by solar panels for use sometime later.

However, there are a couple of key things to note regarding this solar power disadvantage. Firstly, the sun actually does shine when we need electricity most. As humans (not vampires), our days more or less follow the movement of the sun. Society more or less wakes up when the sun rises. At the time of the sun’s greatest height and visibility, humans tend to be most active. At this time, we are of course using much more electricity than in the middle of the night, so electricity is in greater demand. (This also makes electricity more expensive in the middle of the day, making electricity produced from solar panels more valuable.)

Another important point worth noting on this front is that, with storage, solar power could theoretically supply the world with all of its electricity needs. In fact, nothing on earth compares to the energy potential of sunshine:

Dear friends,

Today I want to tell you about the energy that can be restored and irreversible.

Fossil fuels are irreversible energies. They include oil, coal and natural gas. They can be used to generate energy, generate electricity, or drive heavy machinery. Unfortunately, they are harmful to the environment. Vietnam is still dependent on unrecoverable energy sources, but hydropower is increasingly used here.

Hydropower and nuclear energy can generate a lot of energy. They can recover and many. However, hydropower is limited because dams can not be built in some areas.

Nuclear power can provide enough electricity for worldwide needs, but it is dangerous.

Sun and wind are alternative sources of energy. Wind turbines rotate wind turbines to generate electricity. Solar power can be converted into electricity. It can be stopped for heating or cooling the house, although there are some disadvantages but these alternative sources of energy can bring a lot of safe and clean. They will be more and more important in Vietnam in the future.

dài vãi

Nowadays,many people spent much time watching television.It can't be denied that since television was invented,it has changed our life in many ways ,and brought us many advantages as well as disadvantages.

Television plays an important role in our daily life.It's very informative.Through television,we can get the latest information easily and rapidly without leaving home.We can learn more and more about the world we live and see many interesting things.Our knowledge is broadened in many ways.

Secondly,televiosin helps us to enrich our spiritual lives.In particular,we can learn the language we like such as English,Chinese,France,Spanish,Japanese.....through language programs.We can be good and clever at doing jobs,making cake,cooking,arranging flowers through practical course which is taught on television.

And watching is an enjoyable way to relax.After a hard-working day,it's so comfortable and fun to sit at the armchair and see a movie or watch a comedy program.There are also educational programs on television,so children can learn a lot from these programs.

On the other hand,televiosion has some disadvantages.It has negative effects,especially for children.Some movies contain violence or crime.Therfore,the evil influence of televison on the young generation is inevitable.It encourages them to commit crime,or make children grow up to be violent adults.

What's more,watching television too much makes us passive.When watching TV,our brains don't need to work.Therefore,our brains become lazier.Watching TV too much is also bad for our eyes.This is the main cause that leads to short-sightened.

All things considered,everything has two sides,advantages and disadvantages.Television will be useful to us of only we know how to use it correctly.

Computer games are addictive. That is the main reason children play them for hours on end. There are several disadvantages to spending a lot of time in front of the computer.

Computer games merely provide entertainment. Children who are addicted to computer games tend to have poor grades because they do not get enough time to focus on their studies. Also, they have reduced social skills. They are constantly glued to their screens and show hardly any interest in interacting with their family members or peers. This can lead to social isolation and serious behavioural problems.

Some popular computer games glorify violence and crime. Children who grow up playing these games may get into anti-social activities. Even if they don’t become criminals in the future, they may still exhibit a disregard for values.

Computer games also cause vision problems in children. Children are not supposed to stare at the computer screen for hours on end. If they do, they will develop serious eye strain which may also affect their studies.

On the bright side, computer games make children competitive. Games that require them to play against virtual or real opponents living in another part of the world improve their concentration and ability to take decisions quickly. These are definitely positive aspects but a child does not have to play computer games to develop these skills.

To conclude, after analysing the advantages and disadvantages of playing computer games it is not hard to see that the disadvantages outweigh the advantages. In my opinion, parents should restrict the amount of time their children spend in front of the computers. That said, there is no harm in playing a game or two every now and then, but addiction is definitely a problem.

In Vietnam there are a lot of traffic problems in my country. First, there are too many people using the roads in the rush hour. Second, there are too many vehicles on the road that leads to traffic jams. Another problem is that many roads are narrow and bumpy. Fourth, there are traffic accidents every day so a lot of people are injured. I think we should obey the traffic rules and traffic signs as well.

- M lôi t vô bh z? M thêm @ vô chớ để tke noá ko nhắc tau =.='

Life in the city is full of activity. Early in the morning hundreds of people rush out of their homes in the manner ants do when their nest is broken. Soon the streets are full of traffic. Shops and offices open, students flock to their schools and the day’s work begins. The city now throb with activity, and it is full of noise. Hundreds of sight-seers, tourists and others visit many places of interest in the city while businessmen from various parts of the world arrive to transact business.

Then towards evening, the offices and day schools begin to close. Many of the shops too close. There is now a rush for buses and other means of transport. Everyone seems to be in a hurry to reach home. As a result of this rush, many accidents occur. One who has not been to the city before finds it hard to move about at this time. Soon, however, there is almost no activity in several parts of the city. These parts are usually the business centres. With the coming of night, another kind of actịvity begins. The streets are now full of colorful lights. The air is cooler and life becomes more leisurely. People now seek entertainment. Many visit the cinemas, parks and clubs, while others remain indoors to watch television or listen to the radio. Some visit friends and relatives and some spend their time reading books and magazines. Those who are interested in politics discuss the latest political developments. At the same time, hundreds of crimes are committed. Thieves and robbers who wait for the coming of night become active, and misfortune descends upon many. For the greed of a few, many are killed, and some live in constant fear. To bring criminals to justice, the officers of the law are always on the move.

Workers and others who seek advancement in their careers attend educational institutions which are open till late in the night. Hundreds of them sit for various examinations every year. The facilities and opportunities that the people in the city have to further their studies and increase their knowledge of human affairs are indeed many. As a result, the people of the city are usually better informed than those of the village, where even a newspaper is sometimes difficult to get.

The city could, therefore, be described as a place of ceaseless activity. Here, the drama of life is enacted every day.

But urban centers are filled with motorized transport and other sources of pollutants like waste from the large populations of people, or emissions from factories. The urban centers have very few or even totally missing green spaces with higher amount of pollutants that are so harmful for citizens. For a long time, lung cancers, chronic obstructive pulmonary diseases and asthma are just a few diseases common among urban dwellers.

Another disadvantage of living in a city is traffic congestion. Every day, many people have to struggle with the transportation jams, who usually face with being late in their office. They are always stuck for many hours on the way to work. In addition, more transports on the street are the main distributor of air pollution which can lead to many bad effects on man’s health.

It is undeniable that the cost of living in big cities is much higher than in countryside. The impact of this can result in the expensive cost of the public services such as health service, postal service, education… It will be difficult for the poor and workers to live in big cities with a low minimum wage. They seem to struggle with the rapid changes in the price of basic necessities and public services like hospitals, schools,…

This is my idea about the advantages and disadvantages of living in the city.But conclusion,we should choose for ourselves a place to live well.