Cov­er­age of the refugee cri­sis peaked in 2015. By the end of the year, note researchers at the Uni­ver­si­ty of Bergen, “this was one of the hottest top­ics, not only for politi­cians, but for par­tic­i­pants in the pub­lic debate,” includ­ing far-right xeno­phobes giv­en mega­phones. What­ev­er their intent, Daniel Trilling argues at The Guardian, the explo­sion of refugee sto­ries had the effect of fram­ing “these new­ly arrived peo­ple as oth­ers, peo­ple from ‘over there,’ who had lit­tle to do with Europe itself and were strangers.”

Such a char­ac­ter­i­za­tion ignores the cru­cial con­text of Europe’s pres­ence in near­ly every part of the world over the past sev­er­al cen­turies. And it frames mass migra­tion as extra­or­di­nary, not the norm. The cri­sis aspect is real, the result of dan­ger­ous­ly accel­er­at­ed move­ment of cap­i­tal and cli­mate change. But mass move­ments of peo­ple seek­ing bet­ter con­di­tions, safe­ty, oppor­tu­ni­ty, etc. may be the old­est and most com­mon fea­ture of human his­to­ry, as the Sci­ence Insid­er video shows above.

The yel­low arrows that fly across the globe in the dra­mat­ic ani­ma­tion make it seem like ear­ly humans moved by bul­let train. But when con­se­quen­tial shifts in cli­mate occurred at a glacial pace—and economies were built on what peo­ple car­ried on their backs—mass migra­tions hap­pened over the span of thou­sands of years. Yet they hap­pened con­tin­u­ous­ly through­out the last 200,000 to 70,000 years of human his­to­ry, give or take. We may nev­er know what drove so many of our dis­tant ances­tors to spread around the world.