| Similarity | Rank | |
|---|---|---|
| water_shortage | 0.631 | 40423 |
| water_crisis | 0.622 | 78088 |
| high_oil_price | 0.607 | 99298 |
| economic_problem | 0.599 | 38699 |
| peak_oil | 0.597 | 42109 |
| water_scarcity | 0.594 | 48604 |
| food_crisis | 0.587 | 70086 |
| environmental_crisis | 0.587 | 74211 |
| economic_crisis | 0.585 | 10361 |
| energy_issue | 0.581 | 64401 |
| energy_supply | 0.580 | 25938 |
| energy_security | 0.580 | 23237 |
| alternative_energy_source | 0.580 | 77620 |
| energy_policy | 0.575 | 22003 |
| global_warming | 0.571 | 5979 |
| the_power_sector | 0.565 | 59606 |
| environmental_problem | 0.564 | 25380 |
| debt_crisis | 0.561 | 56311 |
| energy_resource | 0.560 | 32118 |
| of_fossil_fuel | 0.559 | 44531 |
| energy_independence | 0.558 | 65055 |
| energy_production | 0.557 | 24155 |
| environmental_challenge | 0.556 | 68452 |
| energy_price | 0.555 | 45163 |
| oil_price | 0.554 | 24457 |