Sperm donors up to the age of 45 are just as likely to conceive children as those in their 20s, a large study has shown.

SCIENTISTS made a major step towards understanding why older women are more likely to produce abnormal eggs, increasing the risk of infertility, miscarriage and birth defects such as Down’s Syndrome.

MILLIONS of people who have diseases which are currently incurable were given hope yesterday when British scientists were granted permission to clone human embryos for medical research.

BRITISH scientists have been given the go-ahead to clone human embryos for medical research.