A troop of macaques escaped one of the largest primate-breeding facilities in America. Now a strange coalition of ...

Thought to be extinct in the wild, the Spix Macaw currently exists in captivity with their numbers in the dismally low 60 to ...

Air pollution remains a major cause of death in the United States, one usually associated with tailpipe exhaust and factory and power plant smokestacks. Now new research shows that 16,000 U.S. deaths ...