Courtship

Menopause May Be Why You Want A Romantic Relationship 

Menopause May Be Why You Want A Romantic Relationship 

Menopause is one of the oddest features of human reproductive biology. Not the hot flashes or the forgetfulness, but the fact that older women lose the ability to have babies. Now researchers say that once it appeared, menopause may have had a ripple effect on human mating that helped create…

The Biggest Kangaroos Evolved Long Arms To Fight Over Females

The Biggest Kangaroos Evolved Long Arms To Fight Over Females

Male kangaroos and wallabies, like a lot of seemingly quiet grazing animals, get into knock-down drag-out fights over females. They obviously don’t have antlers or horns to spar with, but they’re perfectly willing to grapple rivals with their forelimbs and kick the crap out of each other with their big…