Tracking global migration has long been hampered by poor, outdated data. Now researchers have harnessed social media data to ...

These estimates, drawn from the location data of three billion Facebook users, provide a view of human migration in ...

Hummingbird Central tracks sightings from around the country to give a real-time look at the hummingbird migration patterns for the season. See the most recent sightings in the United States ...

As terrestrial animals, many people don’t think of the sky as a significant ecosystem. For birds, bats and some insects, this ...