Not all that protected, after all The intention of creating protected natural areas is to protect them in the long term from destructive human activities. Governments do not always follow these intentions, however, and often legally remove protections and reduce the extent of protected areas. Golden Kroner et al. looked across the United States and Amazonia over the past 200 years and found more than 700 such changes, two-thirds of which have occurred since the year 2000 (see the Perspective by Naughton-Treves and Holland). The majority of these were to permit destructive practices, such as resource extraction. Thus, these changes do not just alter status but lead to irreparable environmental harm. Science , this issue p. 881 ; see also p. 832