Note: "A Science Adventure" may be a publication series, probably with series editors Pilar Perez and Viggo Mortensen (credited without mention of a publication series, on copyright page of 2nd printing viewed at Amazon.com 2019-04-05). "A Science Adventure" is displayed below the main title on the title page, same as on the front cover. WorldCat records make it a subheading, or implied subtitle. Mortensen and Perez co-founded the direct-mail publisher Perceval Press in 2002. (See the publisher record.) The three children of the story are the writer's two sons, Jack and Conor, and a friend Julia. It is based on a visit to East Greenland by father and sons, and a bedtime story he told there. "I break with fiction convention by including footnotes to guide readers curious toknow more about trikes, mammoth cloning, lost Vikings, Knud Rasmussen, the culture of East Greenland, Norse magic, ice caves, and more. Within the fantasy there are numerous islands of historical fact and science." --from the Prologue, viewed as "Look inside" at Amazon

Synopsis: "While working with a famous scientist in Greenland, four teenage scientists stumble upon a mysterious find that transports them to the Valley of the Runes where they encounter marooned Vikings, Arctic hurricanes, and other dangerous adventures." --blurb at Amazon.com 2019-04-05 WorldCat library record OCLC 54782558 gives a list of 10 chapter titles and a long summary that mentions "[b]attling screaming ice, marooned Vikings, a sorcerer named Halldor, an Arctic hurricane, and a collapsing cave" --presumably provided by the publisher, but different from the description on the back cover of the 2nd printing (viewed as "Look inside" at Amazon).