The United States is on track to see negative net migration for the first time in at least five decades, according to CNN, as President Donald J. Trump fulfills his promise to end the migrant invasion ...

Here authors find a latitudinal migratory divide in a butterfly across Earth’s hemispheres, highlighting how hemisphere-specific seasonality and navigational cues shape migratory strategies. They find ...

As of the end of June 2025, the most recent reporting period, 117.3 million people had been forced to flee their homes globally due to persecution, conflict, violence, human rights violations or ...