As sulfur becomes increasingly scarce in soils worldwide, scientists are studying how plants decide whether to invest limited resources in growth or defense.

Sulfur is a critical macronutrient in terrestrial ecosystems, influencing plant growth, protein synthesis and soil health. In agricultural soils, sulfur undergoes a complex cycle of transformations ...

Sulfur, an essential nutrient for plants, was as free as air back in the 1980s, drifting down onto farmers' fields from the polluted sky. The nutrient also caused acid rain, however, and it triggered ...