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For more than 250 years, Columbia has been a leader in higher education in the nation and around the world. At the core of our wide range of academic inquiry is the commitment to attract and ...

Nachbörslich: February 3 at 6:01:00 PM EST ...

Ancient Egyptian person: Well it’s not! We need to know exactly when the river will flood, so that we plant our crops at the right time. That way, we can take advantage of all the nutrients left ...