Environmental science plays an important part in our daily life. It helps in solving the various issues which are arising in the environment very rapidly and without the checks. It is a burning topic at present. The objectives of the study are to know the global warming, climate change, ozone-hole, environmental pollutions and solid waste management.This research is fully based on the secondary data. In this research I analyses the causes and their effects of environmental issues on human beings as well as on plants. I relies that these environmental issues has become a threat to everything and everyone on earth. In environmental issues, each country’s own contribution to worldwide emissions is small so that to solve global environmental problem one needs coordinated actions between countries.