Search our collection of background (non-event) articles from news media, science journals and other sources.
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50 | ||
17 | ||
14 | ||
6 | ||
2 | ||
2 | ||
2 | ||
2 | ||
2 | ||
1 | ||
1 | ||
1 |
30 | ||
27 | ||
19 | ||
19 | ||
14 | ||
5 | ||
4 | ||
3 | ||
2 | ||
1 | ||
1 | ||
1 | ||
1 | ||
1 | ||
1 | ||
1 |
36 | 14 |
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2 | 1 | 3 | 11 | 3 | 14 | 3 | 4 | 2 | 7 |
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SUMMER | 12 | |
SPRING | 5 | |
WINTER | 2 | |
FALL | 1 |
United States | 18 | |
Canada | 2 | |
Russia | 2 |