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The clip combines CGI images of inside the body with a real life story about a fire-fighter to show how the body manages to control its temperature by sweating. It focuses on an experiment looking at how much sweat is lost by the fire-fighter after one minute in a 1002 degree fire.
This clip is from:
First broadcast:
28 September 2011

Classroom Ideas

Ask students to evaluate the experiment shown. Are the findings valid? Could anything else explain the weight loss?
The clip could lead into more in depth study of homeostasis and why the body needs to maintain stable conditions. The class could investigate the effect of changing external temperature on core body temperature and put together their own presentations on the methods the body uses to cope with high and low temperatures. These could be compared to the adaptations of other organisms that must deal with large temperature ranges or extremes of heat or cold.