Search our collection of background (non-event) articles from news media, science journals and other sources.
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| 167 100% | ||
| 41 25% | ||
| 38 23% | ||
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| 33 20% | ||
| 21 13% | ||
| 20 12% | ||
| 17 10% | ||
| 12 7% | ||
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| 41 25% | ||
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| 19 11% | ||
| 17 10% | ||
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| 46 28% | ||
| 32 19% | ||
| 26 16% | ||
| 25 15% | ||
| 23 14% | ||
| 19 11% | ||
| 19 11% | ||
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| 13 8% | ||
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| 3 2% | ||
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| 2 1% | ||
| 1 <1% |
| 1 | 2 | 1 | 1 | 11 | 19 | 45 | 20 | 34 | 5 |
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| 14 | 7 | 8 | 18 | 13 | 18 | 10 | 15 | 14 | 3 | 11 | 8 |
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| SUMMER | 42 | |
| SPRING | 39 | |
| WINTER | 29 | |
| FALL | 28 |
| United States | 47 | |
| Canada | 15 | |
| Norway | 11 | |
| Russia | 10 | |
| Svalbard and Jan Mayen | 2 | |
| China | 1 | |
| Cocos Islands | 1 | |
| Ecuador | 1 | |
| Greenland | 1 | |
| Iceland | 1 | |
| Mexico | 1 | |
| Saint Vincent and the Grenadines | 1 | |
| Switzerland | 1 | |
| United Kingdom | 1 |
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