Humans have always been changing the earth’s surface, but the study of land use change has been greatly aided by satellite imaging since the 1970s. Professor Eric Lambin started his career working with satellite images to examine patterns of land change, and emphasizes that understanding the patterns requires going into the field and talking to the farmers and locals using the land. He also discusses how globalization and international trade can drive land use change in unexpected ways. Finally, Professor Lambin explains the concept of potentially arable cropland (PAC) and the relevance of “peak land” in the context of the Anthropocene, especially for policy makers.
Audio is nice. No cameras, no spotlight.
This essay was written by Mike Osborne. If you wish to hear Mike read it, click play below.
It took a while for me to get comfortable with this question, and, at first, I had no idea how to react. This is a really interesting question to be asked. It’s vague, full of fear, and totally lacking any nuance whatsoever. Actually, if I’m honest with myself, it’s the question that drove me to become a climate scientist in the first place. Ten years ago I walked away from college thinking, “The planet is screwed, we’re all screwed. Or, at least I think we’re screwed. But wait…are we really screwed? Maybe not. Shoot, I don’t know. I don’t have enough information here. I’ll go back to school.” Continue reading
Geographer Reece Jones discusses his recent book “Border Walls,” examining the history of how and why societies have chosen to literally wall themselves apart. He gives a brief history of political maps, how international lines reshape landscapes, and how the trend towards increased border wall construction contrasts with the view of a “borderless” world under globalization. Jones also reveals which border wall is actually visible from space.