© 2026 NBCUniversal Media, LLCApple®, Apple logo® and App Store® are registered trademarks of Apple Inc.
Female chimpanzees that forge strong, grooming-rich friendships with other females dramatically boost their infants’ odds of making it past the perilous first year—no kin required. Three decades of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback