Search our collection of background (non-event) articles from news media, science journals and other sources.
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Extreme Temperature | 2 | |
Pollution | 2 | |
Physical or Chemical Change | 1 | |
Glacier Change | 1 | |
Ice / Snow Change | 1 | |
Eruption | 1 | |
Fire | 1 |
Air Quality | 4 | |
Human Health | 2 | |
Safety | 2 | |
Economic Impact | 1 | |
TOURISM | 1 | |
Transportation | 1 |
3 | 1 | 1 | 2 | 1 |
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SUMMER | 2 | |
FALL | 1 |
Canada | 3 | |
United States | 2 |