I'm sure there are different takes on what was more or less a concern at any given time, but I'll take a look at this attempt to write the history by the meteorological society.

Science is documented fairly well by scholarly papers. So you the linked literature review clarifies what most scientists were worried about.

You won't find history about the ice age concerns, other than in jest or saying it is debunked online anymore, though.

You can find newspaper articles. The TV shows are probably archived somewhere.

Heck, you can't even find info about nearly anything scientific online now, it's all just trying to cram some view or another down your throat.

The scholarly literature is indexed by scholar.google.com, and reasonably well ranked. You can't always find more than the abstract, but more often than not you can.

Most scientific journalism went the way of the Bramble Cay melomys, when newspapers lost circulation, but "The Conversation" is articles co-written by a scientists and a journalist, and are usually as good or better than when a science educated journalist wrote science articles. Sometimes it suffers because there's only one scientists involved, and that means that sometimes you get a skewed perspective. But usually they're pretty good.

The Guardian still does science reporting, for the moment.