The reduction of sulfur in ship fuels meant fewer seeds for water droplet condensation and, as a result, fewer charging collisions between ice crystals. Ultimately, there have been fewer storms that ...

A rock on Mars spilled a surprising yellow treasure after Curiosity accidentally cracked through its unremarkable exterior.

When the rover rolled its 899-kilogram (1,982-pound) body over the rock in May last year, the rock broke open, revealing yellow crystals of elemental sulfur: brimstone. Although sulfates are ...