see my previous post).
Eyewitness: 'Lights fantastic' is taken from the Guardian Eyewitness series - In Swedish Lapland, the northern lights - the aurora borealis - wrap a vivid green mantle around the sky above the country's northern-most city, Kiruna.
Get the Guardian Eyewitness app for iPad for free and be inspired! http://www.guardian.co.uk/ipa
Photograph: KeystoneUSA-ZUMA / Rex Features