すばらしい世界旅行　アラスカの旅“第五氷河期”

あらすじ

Chikara mirai, atarashii hyougaki ga chikara o okoshi, natsu no toki mo chikyuu wa yuki ni oware, ritsugai wa subarashii hayasa de shinkou suru. Kono kagaku-kaigi no seikatsu-kaigi "Subarashii Sekai Ryokou" series wa, jinrui ni kesshite no ketsudan o motte iru: kagaku de shinkou suru hyouga ni tatakau ka, henka suru kishou ni taiteki suru ka.