Picture 1: Swedish Winter by Lisa Widerberg (CC by 2.0) flickr.com
Picture 2: Spring? by Andrew Taylor (CC BY 2.0) flickr.com
Picture 3: Kalix Bandy by Elvira Olsson
Picture 4: Summer by Moyan Brenn (CC BY 2.0) flickr.com
Picture 5: Lake Superior 1 by Stew Dean (CC BY 2.0) flickr.com