The article "Impending extinction crisis of the world's primates: Why primates matter" highlights the severe threat to primate populations worldwide due to habitat loss, human population growth, deforestation, illegal trade, and climate change. It provides a comprehensive analysis of the current status of primate species, their distribution, and the factors contributing to their decline. The study identifies that primates are facing an imminent extinction crisis, with many species classified as threatened or critically endangered. The research emphasizes the importance of primates in ecosystems and the need for urgent conservation efforts. The supplementary materials include figures and tables that provide detailed data on primate species distribution, threat categories, and the impact of various factors such as deforestation, agriculture, and human population growth. The study also discusses the role of human activities in primate population decline, including hunting, illegal trade, and habitat fragmentation. Additionally, it explores the effects of climate change on primate habitats and the challenges posed by human population growth and urbanization. The article underscores the need for community-based conservation programs, mitigation of illegal trade, and technological advancements in monitoring and conservation efforts. It also highlights the importance of addressing the root causes of primate decline, such as habitat destruction and unsustainable hunting practices, to ensure the survival of primate species. The study concludes that immediate and coordinated conservation actions are necessary to prevent the extinction of primate species and to preserve the ecological balance they play in their habitats.The article "Impending extinction crisis of the world's primates: Why primates matter" highlights the severe threat to primate populations worldwide due to habitat loss, human population growth, deforestation, illegal trade, and climate change. It provides a comprehensive analysis of the current status of primate species, their distribution, and the factors contributing to their decline. The study identifies that primates are facing an imminent extinction crisis, with many species classified as threatened or critically endangered. The research emphasizes the importance of primates in ecosystems and the need for urgent conservation efforts. The supplementary materials include figures and tables that provide detailed data on primate species distribution, threat categories, and the impact of various factors such as deforestation, agriculture, and human population growth. The study also discusses the role of human activities in primate population decline, including hunting, illegal trade, and habitat fragmentation. Additionally, it explores the effects of climate change on primate habitats and the challenges posed by human population growth and urbanization. The article underscores the need for community-based conservation programs, mitigation of illegal trade, and technological advancements in monitoring and conservation efforts. It also highlights the importance of addressing the root causes of primate decline, such as habitat destruction and unsustainable hunting practices, to ensure the survival of primate species. The study concludes that immediate and coordinated conservation actions are necessary to prevent the extinction of primate species and to preserve the ecological balance they play in their habitats.