Zach interviews Amber Yang of WantToKnow.Info about the challenges facing humanity today, and how we can overcome them.

Zach interviews Dan, a former gold dealer, about the challenges facing humanity today, and how we can overcome them.

Zach interviews Kevin, a self-described communist sympathizer, about the challenges facing humanity today, and how we can overcome them.

Zach interviews Steve Benson, founder of Benson Medical, about the challenges facing humanity today, and how we can overcome them.

Zach interviews "Nikos al Greco" about the challenges facing humanity today, and how we can overcome them.

Aron Woldeslassie of Minnesota Public Radio interviews Zach about why he's investigating the challenges facing humanity today, and how we can overcome them.

Zach interviews PKB ("Priyank") of Kolkata, India, about the challenges facing humanity today, and how we can overcome them.

Zach interviews "Your Friendly Neighborhood Joe" about the challenges facing humanity today, and how we can overcome them.

Zach interviews Andrew Schumacher of the Minneapolis Television Network about the challenges facing humanity today, and how we can overcome them.

Zach interviews Dr. Edgar Mejia Avedaño, PhD in Philosophy of Science and Language, about the challenges facing humanity today, and how we can overcome them.