Most birds don't migrate. Why do some choose to travel so far?
Seemingly modest genetic difference between spring and fall Chinook at heart of controversy over protection.
Birds have an impressive ability to navigate. They can fly long distances, to places that they may never have visited before, sometimes returning home after months away.
The migration of Oceania’s humpback whales, and their final destination in Antarctica, has remained shrouded in mystery. This year, a team of scientists travelled north to intercept and track the whales. To read this article for free, access it at school.