Human migration is as old as human history. In fact, in some places on our planet there are migrant routes that have been in continuous use for over 4,000 years.
A research team of ours, from the International Organization for Migration, last month had the chance to meet some present-day migrants on one such pathway in Djibouti, a small nation dangling from the Horn of Africa. Through its mountain passes and deserts, pass even poorer people — Ethiopians, mainly, but also Somalis, Kenyans and Sudanese — trekking towards what one might envision as a kind of jobs oasis: the shimmering, booming petroleum exporting countries of the Persian Gulf.
As in ancient times, humankind literally walks out of Africa, undertaking journeys that can take weeks or even months towards places where a family can earn enough from menial work to feed itself and plot a path to a better future.