"The sulfur was deposited around the K-Pg boundary ... and the total amount of sulfur released was calculated through mass balance." The scientists revealed that a total of 67 ± 39 billion ...

In the soil, sulfur moves toward the roots by diffusion and mass flow. In diffusion, sulfur moves from a more concentrated area to a less concentrated area—like food coloring dispersing in water.

THE Department of Energy (DoE) said it is requiring traders of marine fuel, known as bunker, to comply with fuel quality standards for sulfur content. In a department circular dated Jan. 28, the DoE ...