By temperature of around under the influence of global climate change has risen, environmental refugees (climate change refugees) is increasing. In the German study, in areas that are becoming rapid and extreme burning climate of the Middle East and North Africa, to several tens of thousand to several million people of other regions during the next few decades because it is not suitable for residence of mankind It would have to be moved. A modern version [Exodus] might happen. Academic research institutions in Germany, by the research project with a focus on director Lelieveld's Max Planck Institute for Chemical Research, revealed that has doubled the number of days of scorching day is observed every year in the Middle East and North Africa region from 0 years It was. Along with the temperature rise of the global scale, this trend is expected to continue in the future. It has pointed out that occur climate change in the majority in the future the Middle East and North Africa continent, people who live in this area is likely to be exposed to danger.