The 2012 release of the Natural Resource Protection Indicator (NRPI) and the Child Health Indicator (CHI) are computed as a standardized proximity-to-target score ranging from 0 to 100 for each of the four measures. For the NRPI the proximity-to-target score is calculated as a weighted average of the biome protection scores, which are capped at 17% to correspond to the target set by the 10th Conference of Parties of the Convention on Biological Diversity (Nagoya, Japan). We cap the scores by biome so that a country cannot compensate for not meeting the target in one biome by exceeding the target in another. To illustrate the NRPI calculation methodology, we take the hypothetical example of a country that has two biomes, biome 1, which covers 20% of its territory, and biome 2, which covers 80% of its territory. If 20% of Biome 1 is protected, the country gets credit for 17% protection, and if 4% of biome 2 is protected, it gets credit for 4%. We then take the weighted average percentage protection: (0.2 x 17%) + (0.8 x 4%) = 6.6%. To calculate the final score, we divide this percent protection by the 17% target and multiply by 100: (6.6%/17%)* 100 = 38.8. Further details on NRPI data and methods can be found in a methodology document accessible from the documentation section of the Web site. For the CHI, the following methods are used. For Access to Adequate Sanitation and Access to Improved Water, the proximity-to-target measure is equal to the reported percentage. For example, if a country has 84% of its population with access to adequate sanitation, it is considered to have a proximity-to-target score of 84 out of 100. For child mortality, we compute the ratio of the measured probability of dying to the highest observed probability of dying, which is 0.141, and multiply that by 100 to make it comparable to the 0-100 scale used in the other measures. The proximity-to-target measure is this number, which ranges from 0-100, subtracted from 100. For example, a country whose children in the 1-5 age group have a probability of dying of 0.004 would have a proximity-to-target score of 97.2 (0.004/0.1414=0.028; 0.028 x100=2.8; 100-2.8=97.2). The CHI is the simple average of these three proximity-to-target scores. If a country is missing the child mortality data point, a CHI is not calculated for it. If a country has one of the water and sanitation data points, but not the other, a CHI is calculated on the basis of the one score.