Humic substances represent a crucial component of soil organic matter, playing an instrumental role in nutrient cycling, water retention and the enhancement of soil structure. Their complex and ...

represents only 10 per cent of that respired by humic substances in soil. If the Kyoto cuts were implemented, the changes would be of the order of 1 or 2 per cent of the total carbon respired by soil.

Forever chemicals are showing up in food crops. Research has shown that PFAS, or per- and polyfluoroalkyl substances, from contaminated soil can end up in roots, leaves, and fruits people eat — ...