1:05 h157. The Deadliest Disease in Human History | People I (Mostly) Admire
via Freakonomics
1:01 hUPDATE: John Green’s Reluctant Rocket Ship Ride | People I (Mostly) Admire
via Freakonomics
1:08 hJohn Green's Reluctant Rocket Ship Ride | People I (Mostly) Admire | Episode 92
via Freakonomics