"The din created by thousands of nesting birds is usually the first thing you notice about Seahorse Key, a 150-acre mangrove-covered dune off Florida's Gulf Coast. But in May, the key fell eerily quiet all at once."

"In Florida, the official state animal triggers mixed feelings. The Florida panther has been on the endangered species list for nearly 50 years. From a low point in the 1970s when there were only about 20 panthers in the wild, the species has rebounded."

"A coalition of environmental groups filed a lawsuit on Thursday against U.S. wildlife officials arguing that the government's management plan for the endangered Mexican gray wolf, one of the most imperiled mammals in North America, does not go far enough."

"U.S. wildlife managers released on Thursday a draft plan for stemming the decline of polar bears threatened by melting Arctic sea ice linked to global warming, but the proposal hinges on reductions in greenhouse gas emissions that are far from assured."

"The Fish and Wildlife Service (FWS) said Tuesday that it will not reclassify the gray wolf under the Endangered Species Act."

"Imperiled polar bears will see a population crash in most parts of the Arctic Ocean if global greenhouse gas emissions continue at current rates, causing accelerated melting of the sea ice the bruins depend on for survival, U.S. scientists said on Wednesday."

"The EPA will begin analysing the impacts of Atrazine and Glyphosate, the two most-commonly used pesticides in the U.S., on 1,500 plant and animal species in the U.S. under the terms of a settlement reached today with the Center for Biological Diversity."

"A worm called one of the world's "worst" invasive species by conservationists has been found in the United States for the first time, an international team of researchers announced on Tuesday."

"Green groups urged the U.S. Department of Interior on Tuesday to revoke the agency's conditional approval of Royal Dutch Shell's 2015 Arctic oil exploration plan, saying it runs counter to established protections for walruses."

"Eastern cougars that once roamed North America from Canada to South Carolina are extinct and no longer warrant federal Endangered Species Act protections, US wildlife managers have said."