All posts by Carl Sack

U.S.-Mexico border fence near El Paso, Texas

What Eight Waves of Migration Can Tell Us About Human-Environment Relationships

Immigration is often driven by environmental change, and immigrants themselves often change the landscapes they come to inhabit when they arrive. Examining the geographic history of past immigrants and refugees can inform present debates.

Black and white portrait of Laurent Savoy

The Land Doesn’t Hate: A Conversation with Lauret Savoy

A geologist turned award-winning writer reflects on the marks racism has left on the American landscape.


The Arrowhead on the Internet: A Conversation with National Park Service Cartographer Mamata Akella

Cartographer Mamata Akella discusses her work with NPMap, a project to create web mapping tools for the national parks.