| 1 | Shades of green are likely from diatoms | |
| 2 | Diatoms may have other advantages when it comes to oil production. | |
| 3 | Some ocean diatoms are mostly inert, crystallized calcium. | |
| 4 | It may lie in the shell of a single-celled, 100-million-year-old life form called a diatom. | |
| 5 | They feature diatoms, single cells just 0.002-inches-long which are thought to pre-date the dinosaurs. |