Today, I will convene a U.S. Senate field hearing in Anchorage on an issue of great importance to Alaska, our nation and the world at large - the opportunities and challenges that we face as melting sea ice opens up the Arctic for energy and mineral production, shipping, tourism and other commercial activities.

ANCHORAGE - Speakers invited to a U.S. Senate Appropriations subcommittee said more Arctic research is needed as Alaska adjusts to changing conditions due to global warming. Sen. Lisa Murkowski chaired...