| Similarity | Rank | |
|---|---|---|
| environmental_issue | 0.808 | 11632 |
| environmental_impact | 0.688 | 13807 |
| environmental_problem | 0.682 | 25380 |
| environmental_sustainability | 0.675 | 17668 |
| sustainability_issue | 0.667 | 67594 |
| environmental_protection | 0.662 | 10347 |
| environmental_degradation | 0.661 | 26308 |
| social_concern | 0.651 | 74822 |
| environmental | 0.645 | 2347 |
| environmental_challenge | 0.638 | 68452 |
| environmentalism | 0.627 | 38711 |
| environmental_conservation | 0.626 | 53776 |
| health_concern | 0.620 | 45441 |
| social_issue | 0.615 | 13917 |
| public_concern | 0.609 | 70496 |
| environmental_awareness | 0.607 | 50481 |
| environmental_stewardship | 0.607 | 40030 |
| environmental_risk | 0.601 | 55873 |
| environmental_justice | 0.599 | 30670 |
| environmental_regulation | 0.598 | 42752 |
| environmental_impact_of | 0.597 | 67851 |
| environmental_crisis | 0.596 | 74211 |
| environmental_pollution | 0.592 | 52695 |
| environmental_quality | 0.587 | 55712 |
| political_issue | 0.581 | 24961 |