Men have nipples, mammary glands and the hormones required, but the ability for male lactation rarely turns on. Here’s why ...

If there was a mother of the year award for spiders, the ant mimicking spider would surely win.

A mega-study of 117 mammal species reveals that limiting reproduction increases life expectancy by up to 10 percent.

In the kitchen of UC Davis Professor Emerita Sarah Blaffer Hrdy, overlooking a long dining table, hangs a painting by artist Isabella Kirkland.