And let us not forget about the tens of millions of Americans who have been displaced by the unbearable winters in the North.

Parked cars buried by snow in New York City, 1947

Children play after a record setting blizzard in Chicago, 1967

Cars abandoned on Route 128 near Boston after Nor'Easter, 1978
And faced with such uninhabitable conditions, Americans moved south by the trainload.

Los Angeles, 1950s

Phoenix, 1950s

Miami, 1970s
The migration to the sunbelt, started in earnest after World War II with the arrival of air conditioning, may be one of the largest peacetime non-coerced movements of people in human history.
In 1950, of the top 10 largest cities in America, there was only one sun belt entrant, Los Angeles at #4. By 2010, LA had moved up to #2 and was joined by Houston, Phoenix, San Antonio, San Jose, San Diego, and Dallas. For over 150 years, New York was our largest state, but it fell behind 3 sun belt states, first California in 1962, then Texas in 1994, and Florida in 2014.
In 1950,
55% of Americans lived in the Northeast or Midwest, but today it's just 38%, a difference of 56 million. 56 million climate refugees.