It has recently been shown than the sexually transmitted disease (STD) chlamydia can damage sperm and make men infertile. Allan Pacey, at the University of Sheffield suggested new evidence should change the way chlamydia is tackled, and encourages both men and women to be checked and...

Scientists have proved for the first time that sperm grown from embryonic stem cells can be used to produce offspring. Read more at:  https://news.bbc.co.uk/1/hi/health/5166462.stm