Safety | 3 | |
Transportation | 3 | |
Human Health | 2 | |
Economic Impact | 1 | |
Energy | 1 | |
Buildings | 1 | |
Sports / Recreation | 1 | |
Sanitation | 1 |
2 | 1 | 1 |
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1 | 2 | 1 |
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SPRING | 2 | |
WINTER | 2 |
United States | 2 | |
Norway | 1 |