The Calhoun Experimental Forest: A legacy of erosion and the future of sustainability

From surface to core, the Earth’s radius is almost 4,000 miles, but only the uppermost sliver of that rocky expanse, called the critical zone, sustains life. This zone extends from the base of weathered rock to the treetops, and includes water, soils, vegetation, and animals. A new study, led by Duke University and funded with [...]