The reheaters are used to make sure the sulfur vapor doesn’t condense into a liquid, while the remaining hydrogen sulfide and sulfur dioxide from the thermal step react on mixed beds of alumina ...

An unplanned experiment takes scientists closer to solving a long-standing mystery: To what extent, if any, have human-created emissions influenced thunderstorms?

Then, in 2020, new international regulations cut ships' sulfur emissions by 77% ... are tens of thousands of tiny suspended clusters of liquid or solid. In a polluted city, there can be millions ...

The iron isn't pure—scientists believe it contains sulfur and nickel ... Above the inner core is the outer core, a shell of liquid iron. This layer is cooler but still very hot, perhaps 7,200 ...

Three key ingredients are needed for life as we know it: essential elements like carbon, nitrogen, and sulfur; an energy source, and liquid water. Though Europa is only the size of our own moon ...