1. Capturing CO2 from coal-fired power plants is complex.

2.Project Tundra would capture CO2 from the exhaust of a coal-fired power plant in North Dakota.

3. Project Tundra could help Minnkota Power comply with a Minnesota law that requires the use of carbon-free electricity by 2 040.

4. Critics say that the project is a distraction from the need to transition to clean energy sources.

5. The estimated cost of Project Tundra has increased from $1.4 billion to nearly $2 billion.

6. They worry that the captured CO2 could leak from underground storage sites.

7. CCS: A Bridge to a Clean Energy Future?

8. A Pipe Dream: Why CCS Won't Save Coal

9. The Debate Over Carbon Capture Technology