The world has the potential today to sustainably manage nearly one billion tons of ash waste it produces every year and turn it into a useful material for water treatment applications, according to a ...

GADSDEN, Ala.—Cruising upstream on the Coosa River through downtown Gadsden, it would be easy to miss the old coal ash pond sitting on the north bank of the river. It’s mostly hidden by trees and ...

Getting your Trinity Audio player ready... BOULDER — When Xcel Energy stopped burning coal at its Valmont Power Station in 2017, it left 1.6 million tons of toxic coal ash on the property, and now ...

The Gavin Power Plant in southeast Ohio is one of the top emitters of greenhouse gases in the country, according to data from the EPA. Last year, the plant's owners sued the agency over the ...