The interplay between genetics, sexual selection, and parental care appears to play a part in causing this bias, while ...

In most mammals, females live longer than males, but in birds the trend goes the other way – a study of over 1000 species ...

Sexual behavior is one reason why female mammals typically live longer than their male counterparts, according to a new study.

Around the world, women on average live longer than men. This striking pattern holds true across nearly all countries and historical time periods.