Search our collection of background (non-event) articles from news media, science journals and other sources.
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| FALL | 62 | |
| SUMMER | 55 | |
| WINTER | 50 | |
| SPRING | 27 |
| United States | 73 | |
| Canada | 20 | |
| Russia | 5 | |
| Iceland | 3 | |
| Norway | 3 | |
| Japan | 2 | |
| Afghanistan | 1 | |
| Australia | 1 | |
| Estonia | 1 | |
| Finland | 1 | |
| Greece | 1 | |
| Greenland | 1 | |
| Guatemala | 1 | |
| Puerto Rico | 1 | |
| Svalbard and Jan Mayen | 1 | |
| United Kingdom | 1 |
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