The title of the post may be somewhat overstated, but recent posts at Anthropology.net and Keats’ Telescope describe the peopling of North America via the British Columbia coast. The buzz comes from papers presented recently at the AAAS meetings.
I’m not sure this theory is all that new … it has certainly been around since the 1980s (but I stand to be corrected). Still, the posts are good reminders of the current nature of a topic that inevitably come up in classes on British Columbia archaeology or cultures.
In the comments, archaeologist Bob Muckle adds some of the history of the coastal migration hypothesis. He also elaborates on the recent interest in it. It has to do with people following the kelp (and related resources) down the west coast of North America. There is more information in this story from the Underwater Times.