Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SUMMER | 72 | |
| WINTER | 54 | |
| FALL | 42 | |
| SPRING | 40 |
| United States | 68 | |
| Canada | 26 | |
| Norway | 11 | |
| Russia | 10 | |
| Iceland | 8 | |
| Svalbard and Jan Mayen | 4 | |
| Finland | 2 | |
| France | 2 | |
| Greenland | 2 | |
| United Kingdom | 2 | |
| Antarctica | 1 | |
| Cape Verde | 1 | |
| Czech Republic | 1 | |
| Greece | 1 | |
| Guatemala | 1 | |
| Puerto Rico | 1 | |
| Spain | 1 | |
| Sweden | 1 |
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