Climate Hawks

David Roberts, in Grist, consulted his readers about their opinion of what to call the people who care about climate change. He got 226 answers with different suggestions. After analyzing them he finally adopted to “Climate Hawks” as the best expression. He thought the term needed to be broad but shallow. That is, it needed to be broad enough to encompass everyone worried about these issues, but at the same time shallow enough that it doesn't imply a bunch of other positions or commitments. He also had three more good criteria’s for his sorting out among the suggestions. Do you have such term in your language, for people who care about climate change?