Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SUMMER | 42 | |
| WINTER | 35 | |
| FALL | 28 | |
| SPRING | 26 |
| United States | 100 | |
| Canada | 15 | |
| Russia | 9 | |
| Iceland | 5 | |
| Norway | 4 | |
| Greenland | 3 | |
| Svalbard and Jan Mayen | 3 | |
| Ecuador | 1 | |
| Mexico | 1 | |
| Nigeria | 1 | |
| Saint Vincent and the Grenadines | 1 | |
| Solomon Islands | 1 |
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