BONN, Germany -- The future of coal in a carbon-constrained world depends on technically feasible but prohibitively expensive technology that captures emissions from coal power plants. That technology, in turn, has become politically and inextricably linked to coal, despite the fact that most of it right now is used for purposes separate from coal.
Why it matters: Coal has been a popular topic here at a global climate conference hosted by the United Nations precisely for its unpopularity among many of the thousands of political leaders, activists and experts attending. On Thursday, 15 nations announced plans to phase out coal by 2030. Meanwhile, the capture technology itself is getting caught up in the political theater.