From global warming nightmare to " Snowball Earth "

It does seem that the film noir science fiction movies of the 1950s -with their "DAY THE WORLD ENDED" themes - are a recurring nightmare for me 50 years later. I often recall that eerie Twilight Zone episode on TV: " Midnight Sun " : [ "The Earth moving closer to the sun is revealed to be only a fever dream, while in reality the Earth is moving away from the sun, and the world's inhabitants are actually freezing to death. [The Earth's orbit has been perturbed, causing the planet to slowly fall into the sun. A prolific artist, Norma, and her landlady, Mrs. Bronson, are the last residents in their New York apartment building. Their former neighbors have either moved north to seek a cooler climate or they have already perished from the extremely high temperatures." ] A NOVA science documentary describes " Snowball Earth " millions of years ago. So should we clever HOMO SAPIENS succeed in ending the GLOBAL WARMING nightmare - now this ? I just finished reading H.P. Lovecraft's weird fiction classic " The Mountains of Madness " centered in the frigid Antarctic . In the story " The OLD ONES" ( very old ones ! ) have adapted to super cold for MILLIONS OF YEARS. But these creatures were much more intelligent than we-if not quite as cute .