The document discusses 5 tribes that are at risk of becoming extinct in the near future. It provides brief descriptions of the Kalam tribe in Papua New Guinea, the indigenous Maori tribe in New Zealand, the Asaro mudmen tribe in Papua New Guinea, the Chukchi tribe in Siberia, and the Vanuatu tribe in Vanuatu. For each tribe, it highlights some of their unique cultural practices and traditions as well as threats they face to their environments and ways of life.