This semi-aquatic mammal may look improbable, but its biology reveals how evolution shapes even the strangest mammal bodies.

Shere Hite, the subject of a documentary and a new book, made waves in the 1970s with her revelatory findings about the ...

A new Yale study of roundworms, a species with the unique ability to regenerate, reveals that disruptions in the body's ...

The myth that “men can have kids forever” may be biologically possible, but it’s not without consequences. Science is ...

The abundance of viral DNA was measured in DNA sequenced from blood and saliva samples in biobanks, revealing strong ...

Scientists discovered that making a very small change to female mice's DNA caused them to develop male reproductive organs.

Maybe 30 is the new 20. Data released recently from the Census Bureau show that 30-year-olds today — as compared to those aged 30 in 1975 — are less likely to have hit many of the milestones that have ...

Typically, female mouse embryos with two X chromosomes develop ovaries because a gene called Sox9 is suppressed. In male ...