Search our collection of background (non-event) articles from news media, science journals and other sources.
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15 | 11 | 14 | 32 | 16 | 12 | 23 | 9 | 6 | 14 | 8 | 11 |
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SPRING | 26 | |
SUMMER | 24 | |
WINTER | 21 | |
FALL | 10 |
United States | 72 | |
Canada | 10 | |
Norway | 5 | |
Russia | 3 | |
Svalbard and Jan Mayen | 3 | |
Iceland | 2 | |
Sweden | 2 | |
Finland | 1 | |
Switzerland | 1 |