Computer models reveal how human-driven climate change will dramatically overhaul critical nutrient cycles in the ocean. Researchers report evidence that marine nutrient cycles -- essential for ...

The carbon cycle is the biogeochemical cycle focused on carbon and how it is sequestered in and moves between different reservoirs in the Earth system. By quantifying carbon fixation in obligate ...

Biogeochemistry is the study of how chemical elements flow through living systems and their physical environments. It investigates the factors that influence cycles of key elements such as carbon, ...

Crops often receive beneficial nutrients such as phosphorus (P) from manure or commercial fertilizer applications. However, the Delaware Nutrient Management Law (3 Del. C. § 2247) limits the amount of ...

Manures, organic residuals (e.g., biosolids, food processing wastes), and many commercial fertilizers available to producers contain nitrogen (N). Nitrogen is an important plant nutrient that is often ...

Make money by identifying growth stocks, companies poised to grow faster than the market or average business in their industry. The economy moves in a cycle with four basic stages: expansion ...

Having irregular periods is common. However, frequent or large changes to a person’s menstrual cycle may indicate an underlying health condition. Possible causes of irregular periods include fibroids, ...