Study by the University of Waterloo found that as carbon costs rise, assets of $256 billion are at risk of being lost in Canada.

The amount of toxic selenium and arsenic able to escape from coal ash depends largely on their nanoscale structures.

The Swiss miner and commodities giant is willing to buy Teck's steelmaking coal business as alternative to a full merger.

Despite national progress following the approval of the Mercury and Air Toxics Standard, Texas and North Dakota stand out as stubborn continuing sources of mercury emissions.