Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SUMMER | 33 | |
| SPRING | 29 | |
| FALL | 23 | |
| WINTER | 21 |
| United States | 47 | |
| Canada | 17 | |
| Norway | 7 | |
| Mexico | 3 | |
| Russia | 3 | |
| Greenland | 2 | |
| Ecuador | 1 | |
| Greece | 1 | |
| Ireland | 1 | |
| Mongolia | 1 | |
| Spain | 1 | |
| Svalbard and Jan Mayen | 1 |
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