A lake can look still while water below the surface moves in different directions. Scientists got a rare glimpse of that hidden movement in August 1988, when they released green and red dyes into Twin West Lake in British Columbia.

A lake can look still while water below the surface moves in different directions. Scientists got a rare glimpse of that hidden movement in August 1988, when they released green…

In an intriguing experiment conducted at Twin West Lake, scientists employed dyes to reveal the intricate hidden currents. They discovered that the wind created distinct layered…