Smell is the crucial sense that holds ant society together, helping the insects recognize, communicate and cooperate with one another
- Written by Laurence Zwiebel, Professor of Biological Sciences and of Pharmacology, Vanderbilt University

Ants can be found in nearly every location on Earth, with rough estimates suggesting there are over 10 quadrillion individuals – that is a 1 followed by 16 zeroes, or about 1 million ants per person. Ants are among the most biologically...