Treasure linked to the reign of 10th Century Danish King Harald Bluetooth has been dug up in northern Germany.
Two Hungarian researchers have used computer simulations to bolster a longstanding theory that the Vikings used chunks of crystal known as sunstones to find their way during inclement weather.
The rebranding of Vikings from violent thugs to peaceable craftsmen is part of a broader resurgence of interest in a historical period previously embraced mostly by far-right nationalists.
