Swedish skywatchers first thought the phenomenon was a strange kind of aurora but as they continued to stare the blue light remained stationary, while the green aurora danced around it.
Merlin and Lizzie Hanbury-Tenison are not your usual farmers. Their mission is to honour an ancient woodland, restore their land's ecosystems and share its restorative powers.
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.