About 500 million years ago, not a single creature had a skull. Over time, these bony plates evolved into the structural marvels that vertebrates—animals with spinal cords, aka you, me, and your pug, ...

Introduction: Nonnative species in the world / David Pimentel -- The impacts of alien plants in Australia / Richard H. Groves -- Environmental and economic costs of invertebrate invasions in Australia ...

WARSAW, Poland (AP) — A respected Polish scientific institute has classified domestic cats as an “invasive alien species,” citing the damage they cause to birds and other wildlife. Some cat lovers ...

The Xenomorph species, on paper, is far more efficient than humans. They are perfectly engineered to be apex predators, possessing an extremely efficient hive-mind-like mentality, a relentless drive ...

The Alien franchise has always focused on just one titular alien — the Xenomorph. Yes, over the years, we got extrapolations ...