Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SUMMER | 68 | |
| FALL | 67 | |
| WINTER | 59 | |
| SPRING | 45 |
| United States | 130 | |
| Canada | 25 | |
| Norway | 9 | |
| Russia | 8 | |
| Iceland | 3 | |
| China | 2 | |
| Finland | 2 | |
| Greenland | 2 | |
| Japan | 2 | |
| United Kingdom | 2 | |
| Afghanistan | 1 | |
| Australia | 1 | |
| Estonia | 1 | |
| Faroe Islands | 1 | |
| Greece | 1 | |
| Guatemala | 1 | |
| Ireland | 1 | |
| Poland | 1 | |
| Puerto Rico | 1 | |
| Spain | 1 | |
| Svalbard and Jan Mayen | 1 |
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