イディオムto blow hot and cold（意味は下記）をこのニュースに掛けたものです。外れの部分もありますが、地球がやさしいかどうかと無理に考えれば当たりかなと思います。
to blow hot and cold:: to change your mind a lot about whether you like someone or something.
Example: The European Union keeps blowing hot and cold on the issue of membership. Macmillan online dictionary.
to blow hot and cold: usually applied to relationships, or potential relationships. It is commonly used to express frustration that a potential partner seems sometimes to invite and sometimes to reject offers of friendship /love. Source: theidioms.com