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#139: The Secrets of a Perfect Shave With Mark Herro

#140: Invest Your Time Like Money With Elizabeth Grace Saunders

#141: The Science of Freediving and Holding Your Breath With James Nestor

#142: The Science of Mating and Dating With Geoffrey Miller

#143: Crossing the Oregon Trail in the 21st Century With Rinker Buck

#144: Living the Braveheart Life With Randall Wallace

#145: The Happiness Industry With William Davies

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#147: The Importance of Mindset With Carol Dweck