The choice of the time period for migration is very important.

"This is a big state for back migration," she said.

New Mexico has long been an important corridor for trade and migration.

It is also a metaphor, I am told, for migration.

Then we'll turn our gaze to space, the future target for human migration.

Education is another reason for international migration, as students pursue their studies abroad.

It is thus often motivated by the desire for legal migration.

From 1997 to 2000, she was the assistant secretary of state for population, refugees and migration.

We are creating the framework conditions for economic migration in Europe.

This species once gathered in groups of several thousand for migration.