The 10-year-long Hyogo Framework forAction (HFA) set out to substantially reduce impacts fromnatural disasters by 2015. Despite efforts toward this goal,economic losses from natural disasters are rising from US$50billion each year in the 1980s, to just under $200 billioneach year in the last decade (World Bank and GFDRR 2013).The economic losses sustained by lower- and middle-incomecountries alone over the last 30 years represent a fullthird of all total development assistance in the same timeperiod, offsetting tremendous efforts by governments,multilateral organizations, and other actors.As the HFAperiod ends against a backdrop of challenging disaster risktrends, and consultations toward a post-2015 framework moveforward, it is important to reflect on the role of disasterrisk assessments in achieving disaster and climateresilience, and on the contributions risk assessments havemade over the last 10 years. Understanding Risk in anEvolving World: Emerging Best Practices in Natural DisasterRisk Assessment, which was developed to inform post-HFAdiscussions and the 2015 Global Assessment Report onDisaster Risk Reduction (GAR),1 reports on the current stateof the practice of risk assessment and on advances made overthe last decade.