background climate change: an existential risk millions of people are being forced to leave their homes because climate change is taking away their livelihoods. lorenz petersen explains why climate-induced migration extreme weather events caused by cli- mate change are on the rise: in many regions, hurricanes, floods and droughts are forcing people to leave their homes. in 2016, 23.5 million people looked for a new home within their country of residence. in bangladesh alone, six million poor people from rural areas moved to slums. experts ex- pect the number of climate migrants to rise in line with the extent to which the effects of climate change are felt – although this is not yet backed by scientific evidence. we talk about climate migrants because climate change is not recognised as a cause of displacement. according to the geneva con- vention, the term refugee applies to any per- son who, owing to well-founded fear of being persecuted for reasons of race, religion, na- tionality, membership of a particular social group or political opinion, is outside the country of his nationality. there are usually several reasons for cli- mate-induced migration: rising sea levels, in- sufficient groundwater, erratic rainfall, saline soil. in most cases, the real reason is poverty: if a person has no prospects, a hurricane will often simply give them the push they need to try their luck elsewhere. another cause of migration is a lack of, or ineffective, development planning. it is of- ten the poorest of the poor who settle in areas at risk of flooding. a wide range of metro- politan areas are affected, especially cities in developing countries such as jakarta, dhaka, manila and calcutta. wealthy countries are better able to protect their inhabitants: the geography of the netherlands, for example, is comparable with that of bangladesh – large parts of the country lie at sea level or therea- bouts. but the netherlands is able to invest much more in coastal protection (around eur 400 million per year). by contrast, is set to rise. bangladesh, which is among the countries most at threat from climate change, currently has no modern dykes. bangladesh is the first country in which the deutsche gesellschaft für internationale zusammenarbeit (giz) gmbh has launched a project designed specifically to address cli- lorenz petersen is director of the climate change, rural development, infrastructure division. mate-induced migration. on behalf of the german federal ministry for economic co- operation and development, we are building sanitation facilities, roads and water pipes in 19 slums. the local population has been in- volved in project work, with 1,400 people finding employment. some 14,000 inhabitants are benefiting from the improved infrastructure. temporary in more than 100 countries, giz is already engaged in long-term efforts to combat cli- mate change and its various effects – one third of our projects are climate relevant. half of these aim to reduce greenhouse gas emissions. in this way, we are supporting en- ergy efficiency in buildings, the use of renew- able energy and the climate-friendly expan- sion of public transport in many countries. the other half of our climate-relevant projects aim to improve adaptability to cli- mate change through, for example, urban and development planning, adapted agriculture and the preservation of mangrove forests to protect coastal areas. climate risk insurance is also playing an increasingly important role: in peru, we have organised insurance for around 300,000 farmers on behalf of the german federal ministry for the environment, nature conservation, building and nuclear safety. in the event of crop failures due to weather-relat- ed disasters, they will now receive compensa- tion quickly and be able to buy new seeds. unfortunately, there are also limits to what can be achieved through adaptation: if sea levels rise too much, resettlement meas- ures will be unavoidable on some islands in the south pacific. on fiji, giz is supporting the relocation of villages to inland areas or higher ground on behalf of the german gov- ernment. in the village of narikoso, for ex- ample, it has joined forces with local inhabit- ants and ministries to develop relocation guidelines that can be used as a model for the entire region. as well as encouraging exten- sive community participation and good plan- ning of new roads and water pipes, the meas- ures aim to offer alternatives to fishing as a source of income. previous ‘background’ articles on giz’s work can be found at: akzente.giz.de/en ) 2 3 e g a p ( t n o m u a e b t o i l l e : n o i t a r t s u l l i 32 akzente 1/18