1.   The landscape is a stony desert, smeared here and there with sulphur compounds.

2.   In the traditional wine-making process, sulphur compounds are used as preservatives, although the quantities of sulphur have grown smaller in recent years.

3.   When the magma hits the surface, it vaporizes sulphur compounds to generate sulfurous plumes.

4.   Apart from improving the detoxification of cancer-causing compounds, sulphur compounds in cruciferous vegetables may have some therapeutic effect against cancer itself.