Across the animal kingdom, we see remarkable variation in brain size. This variation has
even increased over evolutionary time. Traditionally, studies aiming to explain brain size …

Studying infants in the past is crucial for understanding the evolution of human life history
and the evolution of cooperation, cognition, and communication. An infant's growth, health …

Alloparental care is central to human life history, which integrates exceptionally short
interbirth intervals and large birth size with an extended period of juvenile dependency and …

Both absolute and relative brain sizes vary greatly among and within the major vertebrate
lineages. Scientists have long debated how larger brains in primates and hominins translate …

Large brains provide adaptive cognitive benefits but require unusually high, near-constant
energy inputs and become fully functional well after their growth is completed …

Carnivores (cats, dogs and kin) are a diverse group of mammals that inhabit a remarkable
range of ecological niches. While the relationship between ecology and morphology has …

Cooperative breeding (ie when alloparents care for the offspring of other group members)
has been studied for nearly a century. Yet, inconsistent definitions of this breeding system …

Evidence of how gestational parameters evolved is essential to understanding this
fundamental stage of human life. Until now, these data seemed elusive given the skeletal …

Despite decades of research, much uncertainty remains regarding the selection pressures
responsible for brain size variation. Whilst the influential social brain hypothesis once …

Names: Hrdy, Sarah Blaffer, 1946–author. Title: Father time: a natural history of men and
babies/Sarah Blaffer Hrdy. Description: Princeton: Princeton University Press,[2024] …