The Trump administration claims to be rooting out “gender ideology extremism” and “restoring biological truth” in the United ...

It may sound surprising, but groups of hyenas will sometimes take on animals much larger than themselves, even lions.

A new UW-led study examined why a minority of female white-necked jacobin hummingbirds mimic the colorful plumage of males.

Light helps us wake up, keeps us alert, and guides our sleep. But what happens when light becomes erratic? As a researcher ...

New AI technology reveals subtle brain differences between sexes meaning behind these variations challenges common stereotype ...

Archaeologists can estimate a person's sex with 95% accuracy, but many experts are focused on what can be learned about ...

The Chhattisgarh Forest Department is preparing to move four disabled leopards and a hyena from Nandanvan Zoo to a newly ...