In movies and TV shows, it's a popular motif: A dead Viking is placed on a boat, and it drifts slowly out to sea; from land, an archer shoots a fiery arrow that falls onto the boat and engulfs it in flames.It's been seen in the 1958 movie "The Vikings," the History Channel show "Vikings" and fantasy series such as "Game of Thrones." But did the Vikings actually do this?To find out, we asked experts whether there is any archaeological or historical evidence to support the idea.Archaeological evidenceSign up for our newsletterSign up for our weekly Life's Little Mysteries newsletter to get the latest mysteries before they appear online.Our sources noted that a burial like this would leave litt...