Search our collection of background (non-event) articles from news media, science journals and other sources.
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21 | 8 |
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2 | 3 | 5 | 2 | 3 | 2 | 1 | 6 | 3 | 2 |
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SUMMER | 4 | |
WINTER | 3 | |
FALL | 2 |
United States | 9 | |
Canada | 1 | |
Ireland | 1 |