Search our collection of background (non-event) articles from news media, science journals and other sources.
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7 | 3 |
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4 | 1 | 2 | 1 | 1 | 1 |
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SUMMER | 2 | |
SPRING | 1 | |
WINTER | 1 |
United States | 5 | |
Ireland | 1 | |
Norway | 1 | |
Poland | 1 |