Insight into why females of some species undergo menopause while others do not has proven elusive despite an understanding of the biological mechanisms behind the change. However, new research ...

How do behavior, morphology and physiology act in concert to improve a male's reproductive success - and why is there so much variation among outcomes within and between species? Aa Aa Aa Reproductive ...

New research reveals how humans continue to evolve, with specific adaptations found in Tibetan communities enabling them to thrive in low-oxygen, high-altitude conditions.

River turtles face immense challenges from predators and environmental factors from birth. Despite remarkable reproductive adaptations like sperm storage, human-induced threats such as habitat ...

Motherhood in the animal kingdom is an extraordinary achievement, demanding immense effort and resilience. Mothers face constant challenges such as defending their young from predators, finding ...