Mating with many males means more viable nests and improved offspring survival or performance for African Grey Foam-Nest ...

From brain fog to anxiety, the cognitive impacts of menopause are familiar to many. But now it seems the brain changes are much more profound than previously imagined, with potentially long-term ...

It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many genetic, environmental and developmental variations can produce what are thought of as masculine and feminine ...

Each organ in your body’s 11 organ systems work so you can perform activities like breathing, digestion, and movement. Different organs can work together to perform a common function, like how the ...

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The obstetrical dilemma hypothesis states that the human female pelvis represents a compromise between designs most suitable for childbirth and bipedal locomotion, respectively. This hypothesis has ...