Search our collection of background (non-event) articles from news media, science journals and other sources.
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89 | ||
62 | ||
49 | ||
48 | ||
44 | ||
39 | ||
27 | ||
17 | ||
15 | ||
15 | ||
13 | ||
11 | ||
4 | ||
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1 | ||
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82 | ||
72 | ||
53 | ||
46 | ||
40 | ||
35 | ||
33 | ||
30 | ||
29 | ||
28 | ||
19 | ||
19 | ||
15 | ||
15 | ||
14 | ||
14 | ||
10 | ||
10 | ||
7 | ||
6 | ||
4 | ||
2 | ||
2 | ||
1 | ||
1 |
164 | 166 |
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31 | 13 | 15 | 23 | 22 | 21 | 60 | 34 | 24 | 36 | 27 | 24 |
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SUMMER | 48 | |
FALL | 18 | |
WINTER | 13 | |
SPRING | 7 |
United States | 126 | |
Canada | 28 | |
Russia | 9 | |
Norway | 6 | |
Iceland | 3 | |
Brazil | 1 | |
China | 1 | |
Ireland | 1 | |
Italy | 1 | |
Sweden | 1 | |
United Kingdom | 1 |