This is something that's been perplexing me since middle school (so in the late 1980s). In science class we watched an old science fiction short film or episode - and it might've been based on a Ray Bradbury short story. I think the title was something like "The Day the Rains Came." It was about a science crew that was terraforming a planet or moon and accidentally killed all the life because they didn't recognize it was sentient.
Does this jog memories for anybody?
Does this jog memories for anybody?