“Acid rain is a particularly alarming demonstration of the simple ... Those particles are typically lighter than soil, so once they become airborne, they can easily move around in the atmosphere and ...

Humic acid plays a crucial role in soil health and plant nutrition. As a key component of organic matter, it enhances soil ...

Acid rain harms plants and wildlife by altering the pH levels of soils and water bodies — for example, acidification of aquatic ecosystems harms endangered whooping cranes by depleting their food ...