Mayor of county Cork Alan Colman speaking at the 30th anniversary of the Air India disaster in Ahakista, West Cork.

A Singapore-based scientist who was part of the team that created Dolly the sheep, the first cloned mammal, today said her premature death was proof of the many dangers of cloning.

Scientists and doctors argued publicly today over whether cloning is a sound science or an error-prone process that could produce abnormal embryos.

Five newborn cloned piglets could have a dramatic impact on attempts to transplant animal organs into humans, it was announced today.