Search our collection of background (non-event) articles from news media, science journals and other sources.
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Land | 10 | |
Ocean / Sea | 9 | |
Fish | 7 | |
Surface Waters / Wetlands | 7 | |
Land Mammals | 4 | |
Weather | 4 | |
Groundwater | 2 | |
Plants / Kelp | 2 | |
Birds | 1 |
7 | 22 |
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United States | 12 | |
China | 1 | |
Russia | 1 |