In 2021, scientists released fluorescent dye 1,870 metres deep in the North Atlantic; tracking it revealed canyon water rising about 100 metres a day, around 10,000 times the global average

In 2021, scientists released fluorescent dye 1,870 metres deep in the North Atlantic; tracking it revealed canyon water rising about 100 metres a day, around 10,000 times the global average

A fluorescent green dye released nearly 1,870 metres below the surface of the North Atlantic has helped scientists directly observe a long-suspected movement of deep ocean water, and the water was rising far faster at the study site than the global average previously estimated.In an experiment conducted in 2021, researchers released about 55 gallons of … Read more

In 2019, US researchers added fluorescent dye to a Pennsylvania mine-water wetland and flew 12 drone missions; a system designed for 29-hour retention held water for only 4.65 hours

In 2019, US researchers added fluorescent dye to a Pennsylvania mine-water wetland and flew 12 drone missions; a system designed for 29-hour retention held water for only 4.65 hours

Visual observations indicated a retention time of about 61 minutes in Cell 3 and 66 minutes in Cell 4. Monastery Run Wetland 1, near Latrobe, Pennsylvania, was built in 1997-1998 as a passive treatment system for several discharges from an abandoned underground mine. Adequate retention time for iron removal from mine water before discharge to … Read more