Man is a curious being, always eager to probe his immediate and distance environments such as the moon, Mars and other planet in search of truth. 

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He seeks to understand the world in which he lives in through one or a combination of the following : - experience, reasoning and research. These three approaches in understanding nature are neither independent nor mutually exclusive, they are rather complementary.

>The main essence of science to the society is to produce **useful models of reality**. To achieve this, they form hypothesis based on observations they make. 

Science therefore as a systematic body of knowledge consists of fact and principles, which explains man's environment. Other types of scientific knowledge such as concept, generalization, theories and change do exit.

Science may be viewed in essence as a way of thinking in the pursuit of understanding nature, a way of investigating and a body of establishing knowledge. The nature of science is that it is ever dynamic and changing. Science has tried to solve a wide range of human problems ranging from -

* Environmental (green - house gases, global warming, pollution, desertification to landslides).
* Medical - sickle cell disease, stem cell research, DNA-Genetic markings, down's syndrome, HIV/AIDS, infertility management.
* Solar system and space exploration. Science on the other hand has created problems for mankind as seen in:

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1) Oil and gas exploration and exploitation in the Niger Delta region of Nigeria with severe Environmental damage and degradation. 
2) manufacture of Nuclear bombs (NUKES) as seen in Hiroshima and Nagasaki Japan in 1945 during the second world war.
3) Increase in crime wave and other social Vices. Science is still however very beneficial to man.

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