The Entrepreneur Who Built Two Billion-Dollar Brands Shares His Secrets

Entrepreneur John Paul DeJoria discusses building Paul Mitchell and Patrón, overcoming adversity, giving back, and the lessons from his new memoir.
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Can NYC Finally Cool Its Subway?
Why is the NYC subway platform so hot? One rider built his own sensor network to find out. We explore the geothermal fix the MTA is piloting right now.
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