Deep in the Pacific Ocean, a tiny bright yellow worm called Paralvinella hessleri thrives where almost nothing else can, around boiling hydrothermal vents that gush metal-rich, poisonous fluids. These ...

To blunt the toxic arsenic in the waters where it lives, a deep-sea worm combines it with another chemical to produce a less toxic compound. By Jack Tamisiea Arsenic is a toxic metal, and exposure to ...