The most common fossil fuel used for energy is coal. It has been a primary source of energy for centuries, especially during the Industrial Revolution. Coal is formed from ancient plant matter that underwent heat and pressure over millions of years, resulting in carbon-rich deposits. It is primarily used for electricity generation and steel production. Despite its abundance and low cost, burning coal releases significant amounts of carbon dioxide and other pollutants, contributing to climate change and air quality issues. Transitioning to cleaner energy sources remains a crucial challenge for many countries reliant on coal.