Did Vikings find their way to a remote part of Oklahoma? Some in a small community believe so, thanks to controversial runic carvings found in the area.
The world s largest crystal cave bbc.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bbc.com Daily Mail and Mail on Sunday newspapers.
Hewn from a near-mythic Scottish mountain, colossal Cruachan Power Station in Argyll is a model for renewable and low-carbon energy production and a pioneer in sustainable tourism.
A little-known meteorological phenomenon makes a tiny village in Arctic Sweden one of the best places on Earth to consistently see the Aurora Borealis.
A little-known meteorological phenomenon makes a tiny village in Arctic Sweden one of the best places on Earth to consistently see the Aurora Borealis.