Light shines in High Arctic darkness

The story goes that warm air refracts more light, bending it slightly where cold air goes straight, never reaching the earth. This sounds plausible. Thanks for the topic for reflection Johnny. Steve.

"People in the High Arctic say their 24-hour darkness isn't as dark as it used to be, and a weather researcher says it's because of the warming climate." CBC News - North - Light shines in High Arctic darkness 

An Inuit hunter looks out on the Arctic horizon at sunrise in Frobisher Bay near Tonglait, Nunavut, in February 2003. Inuit and other High Arctic residents say their winters are getting lighter as the climate warms. (Kevin Frayer/Canadian Press)