Search our collection of background (non-event) articles from news media, science journals and other sources.
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| SUMMER | 16 | |
| FALL | 9 | |
| SPRING | 7 | |
| WINTER | 1 |
| United States | 77 | |
| Canada | 13 | |
| Russia | 5 | |
| China | 1 | |
| Iceland | 1 | |
| Italy | 1 | |
| Norway | 1 | |
| Trinidad and Tobago | 1 |
Observations From Members