In 2015, University of Florida scientists poured 5 gallons of red Rhodamine dye into Silver River’s main spring vent to track how water moved as the clear spring run turned more algae-green
In 1996, Columbia scientists shifted Biosphere 2’s 2.6-million-gallon Arizona ocean between ice age, modern and future CO₂ every 3 months; future chemistry cut coral calcification by about 40%