Warmer temperatures and more tourists make it easier for non-native species to get a foothold in northern outposts. Species that are not native to an area can displace species that already live there.

Many non-native plants could survive in the Arctic, as rising temperatures and human activity make it easier for invasive plants to arrive.

"Is [the] tree of heaven invading Paris?" the original poster posed to the Invasive Species subreddit, sharing photos of small trees throughout the city. Several pictures appeared to show the saplings ...

It's a big universe out there, and while we're all for exploring it, a specific subgenre of science fiction movies has hinted that it might be a bad idea. Alien invasion movies have come in droves ...

Warning! This article contains SPOILERS for Alien: Earth season 1.Alien: Earth centers around five alien lifeforms that crash-landed on Earth, and we have a wealth of information about the new creepy ...