Jennifer Abbasi, LiveScience Contributor | February 01, 2012 10:00am ET. The finding that women lose interest in sex over time may give couples realistic expectations for their long-term sex lives. Credit: wavebreakmedia ltd, Shutterstock View full size image.
The Yellow Sea is a large inlet of the western Pacific Ocean that separates mainland China and the Korean peninsula on the east.
Flowing into East Korea Bay, the 323-mile long Tumen, also known as the Duman or Tuman, ranks as the country's second-longest river, though only 50 miles of its waters are navigable. Along with the Yalu River, the Tumen forms part of the border between North Korea and China.