Search our collection of background (non-event) articles from news media, science journals and other sources.
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| 79 | 99 |
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| 38 | 21 | 31 | 9 | 1 | 35 | 43 |
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| WINTER | 34 | |
| SPRING | 19 | |
| FALL | 9 | |
| SUMMER | 2 |
| United States | 77 | |
| Canada | 17 | |
| Russia | 7 | |
| Norway | 5 | |
| Iceland | 3 | |
| Finland | 2 | |
| Mongolia | 2 | |
| Denmark | 1 | |
| Faroe Islands | 1 | |
| Greenland | 1 | |
| India | 1 | |
| Svalbard and Jan Mayen | 1 | |
| Sweden | 1 | |
| Trinidad and Tobago | 1 |
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