Currently, the issue of living environment is attracting the attention of all humankind. The earth is our common home, which is seriously polluted because of the large-scale exploitation and production activities of the modernization and industrialization period, the period of consumption society and the increase in population. quickly out of control, environmental pollution and its harmful effects on human life are more and more severe. Therefore, protecting the green - clean - beautiful environment is the duty of everyone in the world.

Everyone knows that the environment has a great meaning and is extremely important to humans. Man cannot exist in isolation. All that people have is taken from the environment: air to breathe, food, water, arable land, land to build houses, factories, factories, hospitals, schools ... and materials for the production of facilities for work and learning. From seemingly ordinary things, the smallest to the most precious possessions, all are given to us by nature. Even the products that we call "artificial" actually originate from nature. Environment is the condition of survival and development of human society. Humans are part of the biological population of the natural world.

The environment is familiar and close to us as close friends in life. But for the immediate benefit, people have mistreated the environment, even deliberately destroying the environment without knowing that doing so is destroying their own lives.

Environmental pollution is happening in Vietnam and around the world. The environment is getting worse and worse: polluted land becomes dead land; water in contaminated rivers becomes a source of disease; The mountains and forests were devastated and bare, storms and floods happened abnormally, the air was full of poison and the temperature of the Earth was getting warmer.

There are many causes of environmental pollution. First of all, due to the low level of human understanding, selfishness leads to a lack of sense of environmental protection, even deliberately destroying the environment. Next is the overexploitation of nature, irresponsible consumption lifestyle with the environment and community, the trend of industrialization and modernization lack of synchronization. For example, the construction of a factory without building a treatment area for waste and gas emissions; lack of attention to balance, friendly with environment to ensure long-term, sustainable development ...

Actions that cause environmental pollution are various and many degrees, from mild to severe, even serious, in our country, innocent deforestation due to the habit of burning forests for slash-and-burn, land expansion. Long-standing cultivation of the mountainous people. The interests of individuals or the profits of forest product exploitation enterprises are very great, leading to the phenomenon of deforestation, landslides, flash floods, floods ... causing catastrophic consequences.

In rural areas, nowadays farmers use chemicals very arbitrarily. Toxic chemicals seep into the ground polluting water sources. Fishermen in many places catch aquatic products with explosives and dredging nets, which deplete long-term resources. In big cities, cars and motorbikes release dust, causing noise, affecting people's health.