Briefly.

The text provides a comprehensive overview of various topics related to primate conservation and the impact of climate change on different species. It covers the decline of endangered primate populations, efforts to protect and restore habitats, and the issue of illegal wildlife trafficking. The text also discusses the conservation efforts for other endangered species such as freshwater fish, migratory birds, vultures, and polar bears. Additionally, it highlights the discovery of new species and the need for conservation efforts to protect biodiversity. The text concludes with positive developments, including the recovery of the saiga antelope population and the discovery of green turtle nests in Cambodia. [Extracted from the article]