This is the inaugural edition of the Ecological Threat Register (ETR), which covers 157 independent states and territories. Produced by the Institute for Economics and Peace (IEP), the ETR measures ecological threats that countries are currently facing and provides projections to 2050. The ETR is unique in that it combines measures of resilience with the most comprehensive ecological data available to shed light on the countries least likely to cope with extreme ecological shocks, now and into the future.