by Public Library of Science Researchers discover that just like in mice, human tears contain a chemical signal that blocks conspecific male aggression. Credit: British Library, Unsplash (CC0, creativecommons.org/publicdomain/zero/1.0/) New research, published in PLOS Biology, shows that tears from women contain chemicals that block aggression in men. The study led by Shani Agron at the Weizmann...