So, I just choose one example (1971), because most claims about 1970's Ice Age articles are overblown. I found no LATimes articles with the title "New Ice Age coming by 2020 or 2030" There were five times that "New Ice Age" was used in print, and of those 40% seem to be referencing an upcoming artistic event's theme (Holiday on Ice).

The main article about an ice age in 1971 would have been on October 24th, 1971. The front page of the LA Times did indeed feature the words "Ice Age" on the bottom of the front page in the "articles inside" block. It did not use the words "New", "coming", "by", "2020" or "2030" in the article title.

I would ask for sources on your list.