Building

Bob Wilson runs the Parkside Limestone Quarry in North Otago. The quarry produces large quantities of agricultural lime and is the sole New Zealand supplier of Oamaru limestone building material. Audio

Ruma Karaitiana is the Chief Executive of BCITO - Building and Construction Industry Training Organisation and Mark Cochrane owns MJC Construction Limited. The BCITO was appointed by Government to set… Audio

The EcoBrick is a no-cost building material made by packing plastic bags into plastic bottles. Jo Stodgel's a fan! Audio

Creator and founder of the Earthship concept of radically sustainable buildings made with recycled materials, who will visit Christchurch to run workshops and deliver public lectures. Audio

The Tuhoe iwi is planning to build its tribal headquarters near Taneatua and claims it will be New Zealand's first ever so-called "living building". Audio

High-rise buildings wouldn't have got off the ground if it wasn't for inventions like concrete and elevators. Audio