Ever wondered why some lakes are bright blue while others are green or brown? The answer lies in the way light interacts with ...

Cancel any time. CHICAGO (AP) — The Chicago River is once again glowing kelly green as the city opens its annual St. Patrick's Day celebrations. CHICAGO (AP) — The Chicago River is once again ...

The Chicago River is once again glowing kelly green as the city begins its annual St Patrick ... The dye is non-toxic. While the river stays bright for several hours, some trace of colour can remain ...

CHICAGO (AP) — The Chicago River is once again glowing kelly green as the city opens its annual ... While the river stays bright for several hours, some trace of color can remain for days.

Chicago Dyes Its River Bright Green as It Opens St. Patrick's Day Celebrations CHICAGO (AP) — The Chicago River is once again glowing kelly green as the city opens its annual St. Patrick's Day ...