Video - Greenland's 'dark snow' climate threat worse than thought

Video - Greenland's 'dark snow' climate threat worse than thought,
September 24, 2014,
CBC News,

Video length: 02:34.

Soot and ash from burning coal, wood and dung speed melting of polar ice
Vast stretches of northern Greenland looked like anything but the snowy white North this summer.

That's because huge amounts of soot - from the burning of coal, wood, diesel and dung - have been deposited in the snow and ice.