Search our collection of background (non-event) articles from news media, science journals and other sources.
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| FALL | 10 | |
| SPRING | 10 | |
| WINTER | 7 | |
| SUMMER | 3 |
| United States | 8 | |
| Norway | 5 | |
| Denmark | 2 | |
| Sweden | 2 | |
| Afghanistan | 1 | |
| Australia | 1 | |
| Canada | 1 | |
| Mongolia | 1 | |
| Romania | 1 | |
| Saint Vincent and the Grenadines | 1 |
Observations From Members