Over the past dozen years, a number of large dams in the Pacific Northwest have been removed in an effort to restore riverine ecosystems and dependent species like salmon. These dam removals provide perhaps the best example of large-scale environmental remediation in the 21st century. This...

In the mid-nineteenth century, as the pace of American westward expansion accelerated and tension between white settlers and indigenous tribes mounted, the federal government convinced many Pacific Northwest tribes to enter into treaties that would facilitate white settlement. In exchange for...