Nearly 17% of the world's croplands are contaminated with "heavy metals," according to a new study in Science. These ...

While arsenate [As(V)] is less toxic and more easily immobilized, converting As(III) into As(V) is a critical step in ...

the history of prokaryotic arsenate respiration should be re-evaluated, which may have crucial implications for various aspects of the ancient arsenic cycle.” Previous studies indicated that ...