Warning! Spoilers ahead for Uncanny X-Men #10! Nightcrawler is one of the X-Men franchise's fan-favorite heroes, with his striking demonic appearance and the iconic “BAMF!” so ...

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 ...

Sometimes it is easy to overlook the biological importance of another essential element, sulfur, the fragrant neighbor of the elements that comprise most organic compounds. In fact, sulfur occurs ...