| 1 | And ink from soot and spit. | |
| 2 | The resulting coal ash and gypsum are sold to the cement industry. | |
| 3 | Greenpeace investigated coal ash pollution from the Shentou number two power plant. | |
| 4 | The impacts would have filled the atmosphere with smoke and soot and blotting out the Sun. | |
| 5 | And the reason could be coal ash, according to new research published in Nature Geoscience. |