text: To assess implications of climate change for vulnerability to food insecurity, we used an 
  adaptation of the Hunger and Climate Vulnerability Index (HCVI) [22]. The HCVI was developed 
  by the United Nations World Food Programme to provide a country-level assessment of 
  vulnerability to food insecurity as a result of climate-related events. We used a new iteration of the 
  HCVI which makes use of gridded climate model projections to understand the impact of climate 
  change on vulnerability to food insecurity, and the beneﬁts that adaptation can bring via scenarios 
  of adaptation investment [23]. This iteration of the HCVI only considers in-country production 
  of food and does not account for food trade. For this reason, the HCVI is only calculated for 
  122 developing and least-developed countries (deﬁned here as countries not in the OECD or EU 
  which can be resolved by the scale of the climate model; i.e. larger than 500 km2). 
  
  The index provides quantiﬁcation at the national level across the globe of the scale and 
  direction of impact of climate change on food insecurity. As such, it aims to provide the following: 
  (i) information to help policy-makers understand the level of challenge to global food security that 
  climate change presents; (ii) information on the geography of the impacts and help to evaluate the 
  relative beneﬁts of mitigation and adaptation responses. 