Slavery
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Malaria and the Mason-Dixon
When push came to shove, it was a microscopic virus that would draw the frontiers of a nation, and help to decide the life and livelihood of millions upon millions of the Americans who came to live there.

You Asked invites you to share your most pressing questions about climate, science, and sustainability. Lamont-Doherty Earth Observatory and Columbia Climate School experts will respond with clear, evidence-based answers. Pose your questions and story ideas!

