Land | 26 | |
Surface Waters / Wetlands | 10 | |
Weather | 9 | |
Plants / Kelp | 8 | |
Ocean / Sea | 7 | |
Air | 6 | |
Land Mammals | 3 | |
Atmosphere | 1 | |
Microbes | 1 | |
Marine Mammals | 1 |
Buildings | 13 | |
Human Health | 8 | |
Safety | 6 | |
Transportation | 6 | |
Energy | 4 | |
Sanitation | 4 | |
Air Quality | 2 | |
Agriculture | 2 | |
Displacement | 1 | |
Water Management | 1 |
16 | 5 | 2 | 2 | 1 |
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2 | 2 | 1 | 3 | 3 | 1 | 5 | 3 | 4 | 2 |
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FALL | 9 | |
SUMMER | 9 | |
SPRING | 6 | |
WINTER | 2 |
United States | 7 | |
Russia | 5 | |
Canada | 4 | |
Norway | 1 | |
Puerto Rico | 1 |