Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SPRING | 68 | |
| SUMMER | 68 | |
| WINTER | 52 | |
| FALL | 41 |
| United States | 151 | |
| Canada | 27 | |
| Russia | 17 | |
| Norway | 15 | |
| Svalbard and Jan Mayen | 7 | |
| Iceland | 5 | |
| Greenland | 3 | |
| Sweden | 2 | |
| Switzerland | 2 | |
| China | 1 | |
| Cocos Islands | 1 | |
| Ecuador | 1 | |
| Finland | 1 | |
| Mexico | 1 | |
| Mongolia | 1 | |
| Saint Vincent and the Grenadines | 1 | |
| United Kingdom | 1 |
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