WWF 200 Places Which Should Never Die. This important volume exhorts us to preserve the delicate ecosystems of the world - while we can. An important and timely book at a time when we are more aware than ever of the vulnerability of the earth and of the uncertainty of its future. A great way to visit the world's most precious natural settings without having a negative impact on them. 200 of the world's most critical, endangered natural sites are identified. Stunning photographs convey a diverse range of global eco-regions, showcasing the unique characteristics of each region and the threats to each.