Helen Thayer's Arctic Adventure by Sally Isaacs
This is a pretty cool story for kids. A great sense of adventure and danger but enough distance to keep it from being overly frightening.\. The level of detail is just about perfect for elementary age readers. The images weren't as polished as I might have liked but the subject appeal makes up for that somewhat. This wouldn't be the first non-fiction book I'd recommend, but given the right circumstances I could imagine directing a kid to it.