When did Catalyst Season 1 Episode 20 air?
Catalyst Season 1 Episode 20 aired on January 1, 2013.


Catalyst is Australia's premier science investigation series. Each week the team brings you stories from Australia and around the world, meeting scientists at the forefront of discovery.
This special report looks at the domino effect of environmental and atmospheric factors that drive the globe to wetter, hotter, drier and colder extremes.
Direct answers for episode-level questions and details.
Catalyst Season 1 Episode 20 aired on January 1, 2013.
This episode runs for approximately 30 minutes.
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