French biofuels startup promises to unlock the renewable methane in smaller-operation livestock farming.

In February 2026, videos circulating on social media showed a mass of mining waste rushing downslope like thick mud, ...

South Carolina environmental regulators learned about toxic pollution in the soil of an old farm in 2019, but didn’t stop the ...

Explore the controversy around the manure digester pollution in Washington state and its impact on local communities.

A proposed plant that would use a high-heat process to turn sludge into fertilizer has residents worried about odors and property values.

Municipal sludge is a by-product of wastewater treatment that is produced in massive quantities worldwide. Managing this material remains a growing environmental challenge. Traditional treatment ...

Dried sludge at Greater Augusta Utilities District's wastewater treatment plant in 2023. Sewage sludge was once spread on Maine farms as fertilizer but is now sent to landfills because it caused PFAS ...

The oil inside your car's engine can sludge up with neglect and infrequent oil changes. Sludge is a nasty contaminant that can destroy an engine if not given attention, but timely oil changes are a ...

The objectives of this study were to evaluate the potential of using thermophilic aerobic digestion (TAD) to hydrolyze aquaculture sludge, and to investigate the hydrolysis efficiency and changes in ...