Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SUMMER | 9 | |
| WINTER | 8 | |
| FALL | 7 | |
| SPRING | 4 |
| United States | 34 | |
| Canada | 2 | |
| Iceland | 2 | |
| Norway | 2 | |
| Russia | 2 |
Observations From Members