Strong And Fast Sperms Are Bad
Weak sperms are bad, strong sperms are also bad, then how?
It is well known that having too few sperm can cut a man’s chances of fatherhood.
But some may be suffering because they are producing super-sperm which are too fast and powerful, scientists believe.
Evolutionary biologist Oren Hasson believes they race past the defences thrown up by [...]
