A whiff of tears reduces male aggression, says study

Watching someone cry often evokes an emotional response—but according to a new study published Thursday, human tears themselves contain a chemical signal that reduces brain activity linked to aggression.

Cell types in the eye have ancient evolutionary origins

Karthik Shekhar and his colleagues raised a few eyebrows as they collected cow and pig eyes from Boston butchers, but those eyes—eventually from 17 separate species, including humans—are providing insights into the evolution ...

Research reveals ants inflict pain with neurotoxins

University of Queensland researchers have shown for the first time that some of the world's most painful ant stings target nerves, like snake and scorpion venom. This research is published in Nature Communications.

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