i like the bit with liquid nitrogen - just get them out when you want to go shopping/kill a spider/decorate/earn the money etc etc etc
Scientists claim sperm 'first'
Scientists in Newcastle claim to have created human sperm in the laboratory in what they say is a world first.
The researchers believe the work could eventually help men with fertility problems to conceive.
But other experts say they are not convinced that fully developed sperm have been created.
Writing in the journal Stem Cells and Development, the Newcastle team say it will be at least five years before the technique is perfected.
They began with stem cell lines derived from human embryos donated following IVF treatment.
The stem cells had been removed when the embryo was a few days old and were stored in tanks of liquid nitrogen. http://news.bbc.co.uk/1/hi/health/8138963.stm