Women usually live longer than men, and animals show the same pattern. Evolution, genes, and parenting explain why.

Whether you love him or hate him, Donald Trump is undoubtedly unafraid to speak his mind - even if it means getting ridiculed mercilessly by the internet. From the invention of "covfefe" (does anyone ...

Sexual size differences are widespread in biology, yet the "how" behind them often remains vague. We asked a concrete ...

Researchers who analyzed data from zoo animals found that it is not only genetics, but mating pressures that may determine ...

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

However, it’s safe to say that finding a man with a 8.25 x 7.25 inch penis is pretty low on most women’s priority list, after several more important things like, you know, personality, sense of humour ...

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

Reproductive disorders are diseases involving the reproductive system, including reproductive tract infections, congenital abnormalities, cancers of the reproductive system and sexual dysfunction.