To write a literature review, start by selecting a clear, focused topic. Gather relevant sources, such as academic articles, books, and reports. Summarize each source, highlighting key findings and methodologies. Compare and contrast the sources to identify trends, gaps, and debates. Organize your review thematically or chronologically. Ensure to synthesize the information rather than just summarizing each source. Conclude with a summary of the major findings and their implications for your research. For example, if reviewing studies on climate change, categorize them by impacts, mitigation strategies, and future research directions.