What kind of economics leaves out essential factors? One that is not sustainable. So says Rickey Gard Diamond, author of the new book Screwnomics: How The Economy Works Against Women and Real Ways to Make Lasting Change. She points out that, as biologists now recognize, survival depends on collaboration not warfare. And as women seldom organize into gun-toting armies, they are the most likely to successfully negotiate the economic changes needed for a sustainable future. It’s a very different book in many ways.