Two tragic cases from Sydney in the last two weeks have renewed calls from some to introduce "baby safe havens" in Australia.

Versions of this system are used throughout Europe and North America, allowing mothers who are unable to care for their newborn children to leave them in a"baby hatch" at a hospital, allowing them to be cared for and ultimately either reunited with their mother or adopted.

Helen Polley, federal Labor Senator for Tasmania, has campaigned for this system to be introduced in Australia for years. In this interview she explains why they should be adopted and how they might reduce cases of infant abandonment.