Stuff: Mapua's Dr Tord Kjellstrom says heat exposure and stress from climate change will be the greatest threat to human life in the next 100 years.
Mapua's Dr Tord Kjellstrom has researched the impact of climate change heat stress on manual labourers for 20 years. He says people are already dying but the loss of production, particularly in hot countries, could drive a major global economic decline. Helen Murdoch reports.
Imagine you are your grandchild living in a world which has not tamed climate...