Arizona Daily Star: The Tucson Audubon Society is broadening its primary focus from birds and wildlife habitat to water and, particularly, global warming from carbon dioxide and other greenhouse gases. “It’s clear that unless we do something about CO2, habitats will continue to deteriorate, and we won’t have the birds to watch,” said the group’s director, Paul Green, explaining the provocative shift. Sixty years ago, when 25 people held the society’s first local meeting at Tucson High School, they were …