It seems from a study which has found evidence that pollution is affecting evolution of males by damaging genitals and their ability to father offspring.
And, according to the study, the male gender is in danger as a host of common chemicals is feminising the males of every class of vertebrate animals, from fish to mammals, including human beings.
Those identified as gender-benders as they interfere with hormones in males include phthalates, used widely in food wrapping, cosmetics and baby powders among other applications; flame retardants in household furniture and electrical goods; and many pesticides.
Researchers have based their study on an analysis of over 250 scientific researches worldwide.
The study concentrates mainly on wildlife, identifying effects in species ranging from the polar bears
of the Arctic to the island of the South African plains, and from whales in the depths of the oceans to high-flying falcons and eagles.
It concludes: “Males of species from each of the main classes of vertebrate animals (including bony fish, reptiles, amphibians, birds and mammals) have been affected by chemicals in the environment.
Therefore, observations in one species may serve to highlight pollution issues of concern for other vertebrates, including humans.