The article "Biodiversity: An Introduction" covers the concept of biodiversity, its historical context, mapping, importance, human impacts, and conservation efforts. It discusses the elements of biodiversity, how it has changed over time, and the value it holds for humans and the environment. The article also addresses the threats to biodiversity, such as species extinctions and habitat destruction, and outlines measures for conservation and sustainable use. Overall, the article provides a comprehensive overview of biodiversity and emphasizes the need for its protection and preservation.