| Topic Name | Questions | Unanswered | Members | space | 293 | 93 | 211 |
|---|---|---|---|
| earth | 385 | 52 | 248 | beautiful | 110 | 22 | 185 |
| fog | 18 | 3 | 14 | sunny | 13 | 3 | 13 |
| volcanic | 5 | 1 | 7 | volcano | 19 | 1 | 10 |
| god | 366 | 17 | 485 | planet | 114 | 14 | 77 |
| pollution | 31 | 14 | 40 | environmental | 55 | 22 | 90 |
| environment | 158 | 38 | 137 | universe | 87 | 10 | 66 |
| vapour | 8 | 2 | 10 | sun | 168 | 40 | 93 |
| planets | 108 | 14 | 79 | volcanoes | 16 | 1 | 13 |
| climate | 54 | 17 | 42 |
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