Macroevolution is the study of the large-scale patterns and processes of evolution over long periods of time, typically involving the origins of new species, evolutionary trends, and the diversity of life on Earth. This field of research focuses on understanding the mechanisms that drive major evolutionary changes, such as speciation events, extinction events, and the overall patterns of biodiversity that have emerged over millions of years. Researchers in macroevolution may investigate topics such as adaptive radiation, phylogenetics, and the impact of environmental change on evolutionary processes.