Boston Globe: Two German merchant ships have traversed the fabled Northeast Passage after global warming and melting ice opened a route from South Korea along Russia`s Arctic coast to Siberia. The merchant ships MV Beluga Fraternity and MV Beluga Foresight arrived this week in Yamburg, Siberia, their owner Beluga Shipping GmbH said yesterday. They traveled from Ulsan, South Korea, in late July to Siberia by way of the Northeast Passage, a sea lane that, in years past, was avoided because of …