Search our collection of background (non-event) articles from news media, science journals and other sources.
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43 | ||
39 | ||
22 | ||
19 | ||
19 | ||
15 | ||
14 | ||
11 | ||
8 | ||
5 | ||
3 | ||
2 | ||
1 | ||
1 |
128 | ||
54 | ||
52 | ||
34 | ||
33 | ||
14 | ||
11 | ||
9 | ||
9 | ||
9 | ||
8 | ||
7 | ||
7 | ||
5 | ||
3 | ||
3 | ||
2 | ||
2 | ||
2 | ||
1 | ||
1 | ||
1 | ||
1 |
5 | 26 | 63 | 34 |
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21 | 9 | 11 | 12 | 14 | 15 | 2 | 9 | 11 | 9 | 10 | 5 |
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WINTER | 21 | |
SUMMER | 16 | |
SPRING | 13 | |
FALL | 11 |
United States | 69 | |
Canada | 8 | |
Russia | 3 |