Search our collection of background (non-event) articles from news media, science journals and other sources.
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Surface Waters / Wetlands | 12 | |
Air | 5 | |
Groundwater | 5 | |
Fish | 3 | |
Atmosphere | 1 | |
Birds | 1 | |
Invertebrates | 1 | |
Land | 1 | |
Ocean / Sea | 1 | |
Plants / Kelp | 1 |
3 | 4 | 5 | 7 |
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2 | 1 | 1 | 2 | 1 | 3 | 1 | 2 | 1 | 3 | 2 |
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FALL | 3 | |
WINTER | 3 | |
SPRING | 2 | |
SUMMER | 2 |
United States | 5 | |
Canada | 2 |