Search our collection of background (non-event) articles from news media, science journals and other sources.
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| 48 29% | ||
| 46 28% | ||
| 44 26% | ||
| 33 20% | ||
| 25 15% | ||
| 20 12% | ||
| 18 11% | ||
| 16 10% | ||
| 13 8% | ||
| 12 7% | ||
| 9 5% | ||
| 7 4% | ||
| 6 4% | ||
| 5 3% | ||
| 4 2% | ||
| 2 1% | ||
| 2 1% | ||
| 1 <1% | ||
| 1 <1% |
| 167 100% | ||
| 54 32% | ||
| 30 18% | ||
| 16 10% | ||
| 13 8% | ||
| 12 7% | ||
| 12 7% | ||
| 11 7% | ||
| 11 7% | ||
| 8 5% | ||
| 8 5% | ||
| 6 4% | ||
| 5 3% | ||
| 4 2% | ||
| 4 2% | ||
| 3 2% | ||
| 3 2% | ||
| 3 2% | ||
| 3 2% | ||
| 2 1% | ||
| 2 1% | ||
| 1 <1% | ||
| 1 <1% | ||
| 1 <1% | ||
| 1 <1% | ||
| 1 <1% |
| 36 22% | ||
| 27 16% | ||
| 25 15% | ||
| 24 14% | ||
| 22 13% | ||
| 20 12% | ||
| 20 12% | ||
| 19 11% | ||
| 12 7% | ||
| 11 7% | ||
| 7 4% | ||
| 5 3% | ||
| 4 2% | ||
| 4 2% | ||
| 4 2% | ||
| 2 1% | ||
| 2 1% | ||
| 1 <1% | ||
| 1 <1% |
| 1 | 1 | 1 | 8 | 20 | 66 | 21 | 30 | 1 |
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| 26 | 13 | 14 | 17 | 6 | 12 | 9 | 12 | 16 | 5 | 8 | 11 |
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| WINTER | 50 | |
| SPRING | 37 | |
| SUMMER | 33 | |
| FALL | 29 |
| United States | 33 | |
| Canada | 17 | |
| Norway | 9 | |
| Svalbard and Jan Mayen | 4 | |
| Greenland | 3 | |
| Iceland | 3 | |
| Finland | 2 | |
| Russia | 2 | |
| Sweden | 2 | |
| Antarctica | 1 | |
| Guatemala | 1 | |
| Nepal | 1 | |
| Spain | 1 | |
| Switzerland | 1 |
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