Search our collection of background (non-event) articles from news media, science journals and other sources.
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45 | ||
13 | ||
12 | ||
3 | ||
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1 |
28 | ||
25 | ||
18 | ||
16 | ||
12 | ||
3 | ||
3 | ||
3 | ||
2 | ||
1 | ||
1 | ||
1 | ||
1 | ||
1 | ||
1 |
29 | 16 |
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2 | 1 | 3 | 4 | 3 | 16 | 3 | 4 | 2 | 7 |
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SUMMER | 12 | |
WINTER | 2 | |
FALL | 1 | |
SPRING | 1 |
United States | 17 | |
Canada | 3 | |
Russia | 2 |