A global map of alien bird species has been produced for the first time by a team of researchers. It shows that human activities are the main determinants of how many alien bird species live in an ...

Species introduced by humans to areas where they don’t naturally occur are a worldwide problem. These “alien species” can cost a lot of money to deal with, and they’re the number one driver associated ...

Some 247 million years ago, a bizarre, six-inch-long reptile crept down a branch, its prehensile tail and feet clutching the bark like a monkey, and its narrow, birdlike face scanning its surroundings ...