Most young American adults have a limited “understanding of the world beyond their country’s borders,” according to the National Geographic-Roper Public Affairs 2006 Geographic Literary Study.

Understanding geography is something travelers take for granted. It’s both a requirement and a side effect of travel. For Sandy and Darren Van Soye, it is a passion.

In 2003, the couple took their daughters, then ages 10 and 12, on a nearly five-month trip around the world. Through e-mails to their teachers, the family shared the voyage with the entire school. Classmates loved the missives from across the globe, and the experience changed the Van Soye daughters.

“Both girls came home understanding where places are and that much of the world lives differently than they do in California. They had more confidence and were also not afraid of interacting with adults,” said Sandy.

Years later, the couple read that 29 percent of U.S. 18- to 24-year-olds could not find the Pacific Ocean on an unlabeled map. “We decided then and there to find a way to give back as we travel, to hopefully get kids around the globe excited about geography,” said Darren.

The couple saved for seven years to take a 14-month trip to 50 countries on six continents. Now 229 days into their trip, they have covered 36,000 miles, hiking to some of the most remote places on Earth between visits to cities and towns. Lest you think the extensive trip is just a scheme to acquire bounteous frequent flier miles, the Van Soyes stay “close to the ground” using local public transportation (bus, train, ferry) whenever possible. Their goal is to experience the world more closely and minimize their carbon footprint.

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Far from being just a vacation, however, the Van Soyes are using their excursion as a “teaching moment” for 55,000+ schoolchildren across the globe. Some 850 educators from 20 countries are following the Van Soyes’ journey with their students on the couple’s Web site, Trekking the Planet. There are also 300 or more “armchair travelers,” many of whom are fellow cruisers (the Van Soyes, avid cruisers, have incorporated five Princess cruises into their itinerary so far).

The couple provides weekly newsletters with a country-specific educational module, an article or two and often a video. “The goal is to establish a two-way link with students where they can witness first-hand the world ‘out there’ and even pose and receive answers to their questions in near real time,” said Sandy. The materials are free and accessible via their Web site as well as Facebook (Facebook.com/TrekkingPlanet) and Twitter (@TrekkingPlanet).

They’ve visited schools in American Samoa, Thailand, Laos, Nepal and Latvia so far. “The schools in Laos were some of the most remote places we have visited – the buildings were made of bamboo and had dirt floors. But to see the kids’ faces as we talked about our journey made the trip worth it! During our visits, we always ask the students questions that we received from the classrooms that are following us,” said Sandy.

“Technology has changed so much since our last trip in 2003. Last time, we used a stylus-based Casio Cassiopeia to write our e-mails and resize our photos. We used Internet cafes to send the e-mails along with our photos. Now we can do the whole thing with our smartphones,” said Darren.

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The Van Soyes are doing their part — first for their children, now for the world’s children — to broaden the understanding of young people, helping them prepare for a future that is, as the Roper report says, increasingly global.

– written by Jodi Thompson