Search our collection of background (non-event) articles from news media, science journals and other sources.
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| 21 | 6 | 6 | 5 | 1 | 1 | 1 | 2 | 15 | 10 | 12 |
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| WINTER | 18 | |
| FALL | 17 | |
| SPRING | 5 | |
| SUMMER | 1 |
| United States | 44 | |
| Canada | 3 | |
| Finland | 2 | |
| Iceland | 2 | |
| Norway | 2 | |
| Greenland | 1 | |
| Russia | 1 | |
| Spain | 1 | |
| United Kingdom | 1 |
Observations From Members