Gardi Sugdub is a tiny island off Panama’s Caribbean coast that is jammed from end to end with housing for about 1,300 members of the Indigenous Guna people. The island is sinking beneath rising waters as the planet warms. So Panama has built an inland housing development for the entire population. They’ll move into their pristine new homes this month.

If only all climate migration could be so simple.

U.S. President Joe Biden signed an executive order earlier this month making it harder for people to seek asylum at the U.S.-Mexico border, the latest gambit in a political war over immigration that has divided the country for decades. But as with many effects of a changing climate, we might someday look back on the era that gave us routine election-year migrant-caravan panic and Donald Trump’s big, beautiful wall as "the good old days.”