Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SPRING | 12 | |
| WINTER | 6 | |
| SUMMER | 5 | |
| FALL | 4 |
| United States | 41 | |
| Canada | 5 | |
| Norway | 2 | |
| Russia | 1 |
Observations From Members