Possible Clues:

• From the extreme north and south of the earth
• Bear with this possibly, having magnetic attraction
• Coming from either end, so to speak
• Extreme northern or southern
• -- opposites
• — Bear; — co-ordinates
• Kind of circle or lights
• Word before bear or shift
• ''The ___ Express'' (2004 film)
• With 65 Across, kids' train