Search our collection of background (non-event) articles from news media, science journals and other sources.
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23 | 10 | 56 | 9 |
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8 | 13 | 16 | 10 | 11 | 14 | 11 | 4 | 3 | 4 | 4 |
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SPRING | 27 | |
WINTER | 20 | |
SUMMER | 18 | |
FALL | 5 |
United States | 43 | |
Canada | 8 | |
Norway | 3 | |
China | 2 | |
Cambodia | 1 | |
Estonia | 1 | |
French Polynesia | 1 | |
Saint Vincent and the Grenadines | 1 | |
Svalbard and Jan Mayen | 1 | |
Vietnam | 1 |