Talk Radio News Service: Sen. Joe Lieberman (I-Conn.) said Tuesday that climate change presents a growing threat to the United States. “The environmental concerns have merged with two other major American national interests. One is economic. The second coalescence is that climate change is a matter of national security,” Lieberman said during a panel discussion with the Reserve Officers Association in Washington, D.C. Lieberman, who chairs the Senate Homeland Security and Governmental Affairs …