Talk:Cryoconite

The article says cryoconite may contain "particles from volcanic eruptions or power plant emissions." One of these obviously occurs naturally, and the other does not. Please add additional information to the article regarding whether the amount of cryoconite, or its properties, has changed due to human activity. 75.163.217.66 (talk) 19:46, 18 May 2014 (UTC)