1Africa Mercy part 1 The world's largest civilian hospital ship, the Africa Mercy, travels the west African coast, restoring sight to thousands and bringing smiles to faces once disfigured by tumours.

2Kiwi Mercy part 2 Two New Zealand nurses have recently returned from West Africa, where they were serving on the world's largest civilian hospital ship, the Africa Mercy.

3Freediving There are people who can dive deeper than WWII submarines without coming up for air, in the increasingly popular extreme sport called free diving. Bob Simon speaks to two of the sport's top performers for a 60 Minutes story that will bring viewers hundreds of feet under the sea, where records are being broken and lives risked. Two years ago, one of the world's top free divers, New Zealander William Trubridge, broke records by venturing down to 331 feet without swim fins.

4Robert Plant He was the self-proclaimed "Golden God" of Rock. And 40 years on, still singing and touring, Led Zeppelin frontman Robert Plant continues to inspire awe in his devotees, musicians and fans alike.