Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SUMMER | 74 | |
| FALL | 19 | |
| SPRING | 14 | |
| WINTER | 13 |
| United States | 149 | |
| Canada | 29 | |
| Russia | 9 | |
| Norway | 7 | |
| Iceland | 3 | |
| Sweden | 2 | |
| Brazil | 1 | |
| China | 1 | |
| Finland | 1 | |
| France | 1 | |
| French Polynesia | 1 | |
| Ireland | 1 | |
| Italy | 1 | |
| Poland | 1 | |
| Svalbard and Jan Mayen | 1 | |
| Switzerland | 1 | |
| United Kingdom | 1 |
Observations From Members