Search our collection of background (non-event) articles from news media, science journals and other sources.
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| 30 | ||
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| 16 | 14 |
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| 1 | 3 | 4 | 3 | 9 | 3 | 2 | 1 | 4 |
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| SUMMER | 6 | |
| FALL | 2 | |
| SPRING | 1 |
| United States | 15 | |
| Russia | 2 | |
| Canada | 1 |
Observations From Members