Prince William, left, and actor and Earthshot Prize Council Member Cate Blanchett, right, visit Colorifix, a UK-based company which creates sustainable dye for clothing. Picture: AP ...

That’s precisely what UK-based company Colorifix is working on: a fabric-dyeing process that uses the DNA codes for colours found in nature and teaches microbes to recreate them. Founders Orr ...

The dye is nontoxic. While the river only stays bright for several hours, some trace of color can remain for days. A second St. Patrick's Day parade was scheduled for Sunday on Chicago's South Side.

The Chicago River is once again glowing kelly green as the city opens its annual St. Patrick’s Day celebrations. CHICAGO — The Chicago River is once again glowing kelly green as the city opens ...

River O’ Green Fest is a collaboration between the Tampa Downtown Partnership and the City of Tampa. The cost of the dye is paid by the event’s sponsor Grow Financial, and not the City.

As Chicago prepares for the St. Patrick’s Day parade, it's that time of year when members of the Chicago Journeymen Plumbers Local Union 130 dye the city’s river green.