Are we in the midst of a silent mass extinction?
Andy Carstens writes: Nearly one fifth of the genetic diversity of the planet’s most vulnerable species may already be lost, an analysis published today (September 22) in Science finds. If accurate, it would mean that many species are already below a conservation threshold proposed last year by the Convention on Biological Diversity (CBD) a part of the United Nations Environment Programme. Moisés Expósito-Alonso was in his back yard in Menlo Park, California, last year reading a monograph on the unified…