Search our collection of background (non-event) articles from news media, science journals and other sources.
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13 | 11 | 13 | 31 | 15 | 3 | 14 | 8 | 4 | 10 | 4 | 9 |
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SPRING | 25 | |
WINTER | 17 | |
SUMMER | 13 | |
FALL | 3 |
United States | 61 | |
Canada | 5 | |
Norway | 4 | |
Svalbard and Jan Mayen | 2 | |
Sweden | 2 | |
Finland | 1 | |
Iceland | 1 | |
Russia | 1 | |
Switzerland | 1 |