<p>An American expat in Oslo shares some of the quirks and customs of life in his adopted home. Then, a wilderness and history author recounts what he found exploring four blank spots on the US map. And an ethnobotanist describes the healing properties of different kinds of herbs around the world &mdash; some of which might be growing in your own backyard.</p> For more information on Travel with Rick Steves - including episode descriptions, program archives and related details - visit www.ricksteves.com.