World·Source-based summary

In 2017, USGS released 72.57 kg of dye intoIdaho’s Kootenai River; aircraft tracked it from above

In 2017, the US Geological Survey released 72.57 kg of Rhodamine WT dye into Idaho’s Kootenai River over 90 seconds to study how a tracer moves through flowing water. Researchers tracked the dye using instruments in the river and hyperspectral images captured from an aircraft fly

This is a source-based summary, not original reporting by Ebenezer journalists. Source: Times of India · Original byline: TOI Science Desk. Ebenezer published 10 Sept 2026, 07:29 am. Editorial policy.

World — TOI Science Desk