| 1 | The canal is now open to shipping. | |
| 2 | They have to dredge the canal so that ships can use it. | |
| 3 | The ever elusive Northwest Passage may be revealing itself in the Arctic. | |
| 4 | Following Changle, a tributary to import less, can be navigable river wide. | |
| 5 | Scientists saying the Northwest Passage could open up to year-round shipping by 2050. |
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