By Neil DeGrasse Tyson

Duration: 3 h 41 min

By Yuval Noah Harari

Duration: 15 h 19 min

By Ruby Wax

Duration: 7 h 10 min

By Carl Sagan

Duration: 14 h 32 min

By Matthew Walker

Duration: 13 h 53 min

By Christian Davenport

Duration: 11 h 0 min

By Daniela Lamas

Duration: 6 h 6 min

By Ashlee Vance

Duration: 13 h 26 min

By Max Lugavere

Duration: 9 h 51 min

By Michio Kaku

Duration: 12 h 22 min

By Robert M. Sapolsky

Duration: 26 h 29 min

By Rebecca Skloot

Duration: 12 h 33 min

By Yuval Noah Harari

Duration: 14 h 55 min

By Stephen J. Dubner

Duration: 7 h 54 min

By Stephen Hawking

Duration: 4 h 20 min

By Carl Sagan

Duration: 13 h 19 min

By Carlos Pestana

Duration: 6 h 23 min

By Margot Lee Shetterly

Duration: 10 h 48 min

By John Medina

Duration: 8 h 39 min

By Melissa A Schilling

Duration: 10 h 3 min