The Earth's total amount of freshwater dropped abruptly starting in May 2014 and has remained low ever since. The shift could indicate Earth's continents have entered a persistently drier phase.

The letter from the EPA said these segments need to be on the impaired water list because of their levels of nitrate and nitrite, which have a “known toxicity.” The EPA said it asked Iowa, in a ...

By Cami Koons, Iowa Capital Dispatch The U.S. Environmental Protection Agency, after rejecting a portion of Iowa’s 2024 list ...

"There's always some level of nitrates, even in the dead of winter," Hesemann said of the Cedar River. There is an existing ...

These can enrich the pond water, but garden aficionados say they can also destabilise ... It is the process of decomposition ...