"Climate refugees" refers to people whose lives are threatened by special climatic factors such as climate warming. This is a growing ethnic group. A report published by a foundation states that in the next 40 years, about 500 to 600 million people will be globally Everyone is in danger of becoming a "climate refugee. ". Those who are forced to migrate in the following description are not "climate refugees":. ['Hurricane Katrina flees many residents off the coast of Mexico.', 'Indian Ocean tsunami led to the forced migration of residents in India, Thailand and other countries.', 'The desertification of the land has destroyed the once prosperous Loulan country, and the people have relocated.', 'Rising sea levels allow Maldivian leaders to find another shelter for their citizens.']