The paper reviews the global usage of pesticides and their adverse impacts on ecosystems. Pesticides, essential for enhancing crop yield and ensuring food security, are widely used in modern agriculture. Approximately 2 million tons of pesticides are utilized annually, with China being the largest contributor, followed by the USA and Argentina. However, by 2020, global pesticide usage is estimated to reach 3.5 million tons. While pesticides are beneficial, their extensive use can lead to serious consequences due to biomagnification and persistence. They pollute air, water, soil, and ecosystems, posing health risks to living beings. The review highlights the diverse pesticides used globally, their sources, and their impacts on various ecosystems, providing guidance for researchers in this area. Key findings include the increasing demand for pesticides in Africa, Asia, Australia, Europe, North/Central America, and South America, as well as the environmental and health risks associated with pesticide contamination. The paper concludes by emphasizing the need for sustainable pesticide use and management practices to mitigate these risks.The paper reviews the global usage of pesticides and their adverse impacts on ecosystems. Pesticides, essential for enhancing crop yield and ensuring food security, are widely used in modern agriculture. Approximately 2 million tons of pesticides are utilized annually, with China being the largest contributor, followed by the USA and Argentina. However, by 2020, global pesticide usage is estimated to reach 3.5 million tons. While pesticides are beneficial, their extensive use can lead to serious consequences due to biomagnification and persistence. They pollute air, water, soil, and ecosystems, posing health risks to living beings. The review highlights the diverse pesticides used globally, their sources, and their impacts on various ecosystems, providing guidance for researchers in this area. Key findings include the increasing demand for pesticides in Africa, Asia, Australia, Europe, North/Central America, and South America, as well as the environmental and health risks associated with pesticide contamination. The paper concludes by emphasizing the need for sustainable pesticide use and management practices to mitigate these risks.