Search our collection of background (non-event) articles from news media, science journals and other sources.
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4 | ||
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3 | ||
2 | ||
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1 |
34 | ||
15 | ||
12 | ||
8 | ||
7 | ||
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5 | ||
3 | ||
3 | ||
3 | ||
2 | ||
2 | ||
2 | ||
1 | ||
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1 |
22 | 12 |
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3 | 1 | 1 | 3 | 4 | 4 | 5 | 1 | 1 | 3 | 4 | 4 |
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SUMMER | 5 | |
FALL | 3 | |
WINTER | 1 |
United States | 17 | |
Canada | 2 | |
Iceland | 1 |