Twenty-foot pythons could soon be on the march–or on the slither–to new parts of North America, thanks to global warming. Climate modeling for the year 2100 which shows the possible climate range for pythons moving northward and swallowing up northernmost parts of Texas and Arkansas, the southeast half of Kansas, the southern half of Missouri and parts of southern Illinois and Indiana. Further east the big snakes could comfortably creep through Tennessee, Kentucky, Maryland, Delaware and southern New Jersey.