Rebecca Woodgate (R) and Dan Naber prepare a mooring to be deployed into the Bering Strait on board the Russian research vessel Professor Khromov August 25, 2009. A joint U.S.-Russian oceanographic expedition, the Russian-American Long-term Census of the Arctic (RUSALCA), is studying the impact of climate change on the waters from Alaska's coast to Russia's eastern tip. Picture taken August 25, 2009. To match feature USA-RUSSIA/ENVIRONMENT REUTERS/Jeff Jones (UNITED STATES SCI TECH ENVIRONMENT)