During the recent Australian bushfire crisis, numbers gave us a sense of the unprecedented scale of the disaster; 12.6 million hectares burnt, 431 megatons of carbon dioxide emitted, one billion animals killed. But where do these numbers come from?

16.1 Fact checking the fire season

Sum of All Parts tells extraordinary stories about the unseen influence that numbers have on the way we think, feel and behave.

Science

Mathematics

How would you react if you received this SMS? 

BUSHFIRE WARNING. LEAVE NOW.

When we evacuate from a bushfire, we fall into one of seven types of evacuee; from Threat Deniers, to Worried Waverers, to Experienced Independents. 

This is the story of a bad evacuee turned good.

16.2 How we evacuate

Is Benjamin Geen a killer, or the unluckiest guy in England?

15.0 An unusual pattern

Wally Conron invented the labradoodle, one of the world's most popular dogs. He now considers the breed his "life's regret".

14.0 The labradoodle of regret

Where and when did a digital computer play music for the first time?

16.1 Fact checking the fire season

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