"There are an estimated 370 million indigenous people in the world, living across 90 countries. They make up less than 5 per cent of the world's population, but account for 15 per cent of the poorest. They speak an overwhelming majority of the world's estimated 7,000 languages and represent 5,000 different cultures." Read more on the UN International Day of the World's Indigenous Peoples web pages. The website of the UN Permanent Forum on Indigenous Issues has lots of further information including the UN Declaration on the Rights of Indigenous Peoples adopted in September 2007. To find resources on this topic, search on the keyword 'indigenous'. The organisation Survival works for tribal people's rights worldwide, and their website www.survivalinternational.org has background information on their campaigns as well as excellent films and photo galleries. For example, take a look at their Nine Facts for 9 August photo gallery, which provides "nine little-known facts about tribal peoples". They also produced a wonderful 'Tribes from the air' audio slideshow to mark the 18th International Day of the World's Indigenous People in 2012 (and there are many more slideshows on the same page).