Search our collection of background (non-event) articles from news media, science journals and other sources.
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| FALL | 49 | |
| SUMMER | 44 | |
| WINTER | 36 | |
| SPRING | 34 |
| United States | 104 | |
| Canada | 18 | |
| Norway | 7 | |
| Russia | 4 | |
| Mexico | 3 | |
| Sweden | 3 | |
| Denmark | 2 | |
| Greenland | 2 | |
| Iceland | 2 | |
| Svalbard and Jan Mayen | 2 | |
| Afghanistan | 1 | |
| Australia | 1 | |
| Ecuador | 1 | |
| Greece | 1 | |
| Italy | 1 | |
| Japan | 1 | |
| Mongolia | 1 | |
| Nigeria | 1 | |
| Spain | 1 | |
| Switzerland | 1 | |
| Ukraine | 1 | |
| United Kingdom | 1 |
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