One of the great things about science fiction is that you can use it to illustrate social issues without being preachy about it. If you do it right, anyway. Supergirl, for most of this season, feels like they’re clubbing us over the head with the idea.
There are a lot of things you don’t want to be doing in the opening of any sort of adventure/sci fi/superhero show. One of them is be in an isolated research station. That just never works out well. True to form, the scientist running an outpost dedicated to studying global warming gets a nasty surprise as most of his team become the designated redshirts in “Changing.”