Alaska Dispatch by Jill Burke.  On Wednesday the U.S. Fish and Wildlife Service's Alaska region celebrated the act's anniversary with a brief "Happy Birthday!" message on its website, and credited the law with the successful recovery of a handful of animals in Alaska.  But nearly four decades after the act became law it's become a source of ongoing and sometimes escalating   tensions between the state of Alaska and federal regulators.  De-listing species is something Alaska Gov. Sean Parnell (NGP Photo) likes to see. Regulating more animals under the Endangered Species Act isn't. [...]