Five Americans and two Canadians traveled from Fairbanks, Alaska to Hudson Bay (Baker Lake), Canada in March and April, 2007, following the Arctic Circle for much of the route. In keeping with IPY goals, in addition to the snow measurements we made during this 4200 km IPY traverse, we passed through dozens of historic locations, two arctic diamond mines, and 11 villages where we conducted outreach. As part of previous Artic research expeditions, we have found our mode of travel (snowmobiles) to smooth and facilitate researcher-villager interactions. In villages, we shared our science and travel experiences with school children and residents. We also carried with us posters, photos, and greetings from over 50 classrooms participating from around the world. Our travel experiences were also shared via a national web portal (http://www.barrenlands.org). The snow cover measurements (depth, density, stratigraphy, etc.) were the first-ever systematic measurements across the Arctic Canada Barrenlands. They will be used to improve AMSR-E satellite algorithms for snow mapping. We also sampled snow for soot, mercury, and halogens.