Subarashii Sekai Ryokou: Alaska no Tabi "Daigo Hyougaki"
Genres: Adventure, Sci-Fi
Type: Special, Episodes: 2
Aired: Jan 29, 1967 to Feb 5, 1967
Source: Unknown
Rating: PG - Children
Synopsis:
In the near future, Earth is engulfed in a new ice age as snow falls ceaselessly in summer and glaciers advance with uncharacteristic speed. In this SF spinoff of the live-action Wonderful World Travel series, humanity must decide whether to use science to fight the ice or to adapt to it. 

(Source: Anime Encyclopedia)