ReThink History: Salmon Counting

society, culture, history · EN-US

Since 1955, one of the most consequential numbers in conservation — how many salmon 'escape' upstream to spawn — has been produced by a person on a wooden tower with a hand-clicker. This 8-part ReThink History series follows the technology now learning to watch the river for us: solar-powered 'drone-in-a-box' units over Bristol Bay, computer-vision models trained to pick a single sockeye out of glare and shadow, imaging sonar that sees fish in pitch-black glacial water, the 'echogram' that lets a cheap computer count fish where there's no internet, and Indigenous-led AI built into traditional First Nations weirs. Each new way of seeing does more than count faster — it reveals more of a life spent hidden underwater and thousands of miles out to sea, and it quietly changes who controls the count. The series runs from the counting towers and the salmon's own secret life cycle to the hard questions underneath — a warming climate, the Pebble Mine at the headwaters of Bristol Bay, and who ow