Watch Catalyst - Season 20 Episode 5

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Episodes — Season 20
#	Title	Watch
1	Allergy Clinic	Play
2	The Mindfulness Experiment	Play
3	Black Hole Hunters	Play
4	Staying Younger for Longer: Body	Play
5	Staying Younger for Longer: Brain	Playing
6	Should I Risk It?	Play
7	Face Surgeons: Inside the Craniofacial Unit	Play
8	Investigating Body Dysmorphia	Play