BACKGROUND The social environment shapes human health, producing strong
relationships between social factors, disease risk, and survival. The strength of these links …

BACKGROUND Whereas early studies of animal evolution focused principally on the
adaptations of different species to their physical environment, more recent studies have …

Discerning the relationship between sociality and longevity would permit a deeper
understanding of how animal life history evolved. Here, we perform a phylogenetic …

Humans are lawmakers like we are toolmakers. Why do humans make so many laws? Here
we examine the structure of laws to look for clues about how humans use them in …

Despite rising interest among scientists for over two centuries, parental care behavior has
not been as thoroughly studied in amphibians as it has in other taxa. The first reports of …

The organization and coordination of fish schools provide a valuable model to investigate
the genetic architecture of affiliative behaviours and dissect the mechanisms underlying …

Pair bonds represent some of the strongest attachments we form as humans. These
relationships positively modulate health and well-being. Conversely, the loss of a spouse is …

Neuronal networks are the standard heuristic model today for describing brain activity
associated with animal behavior. Recent studies have revealed an extensive role for a …

Abstract Ancient Lake Tanganyika in East Africa houses the world's ecologically and
morphologically most diverse assemblage of cichlid fishes, and the third most species-rich …

In mammals, sexual size dimorphism often reflects the intensity of sexual selection, yet its
connection to genomic evolution remains unexplored. Gene family size evolution can reflect …