See our Citation Policies for more details about how to structure your data citation. The Circum-Arctic permafrost and ground ice map is available via ftp in ESRI Shapefile format and Equal-Area ...

We should then have only to include the North in our confederacy . . . and we should have such an empire for liberty as she ...

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Little change to this pattern is expected until mid-week, when a cold front will cross to the south causing the inland trough to move towards the northeast by the end of next week. Mostly sunny. The ...

U.S. President Donald Trump said he ordered military strikes on a senior “attack planner” of the Islamic State (IS) extremist ...