Could the green stuff that appears on ponds and lakes after a particularly warm spell be the answer to the planet’s food security problems? Humans have eaten macroalgae, like wakame and nori ...

Norcross calls the use of sludge to fertilize fields “a green fantasy.’’ Because of concerns about PFAS, some states, such as Michigan, have prohibited putting sludge on agricultural fields ...

For years a textile mill gave farmers its sewage sludge as free fertilizer. Today the land is full of “forever chemicals.” For years a textile mill gave farmers its sewage sludge as free ...