‘Avatar: Fire and Ash’ Trailer Confirms a Game-Changing Element That Could Be the End of an Era for the Na’vi

Avatar: Fire and Ash is swinging for the fences, especially when it comes to a major plot point in its new trailer.

Baltic diatoms remained genetically stable for millennia—then humans came into play

After humans started using the Baltic Sea, its diatom populations started to experience accelerated—and, so far, irreversible ...