John Green reviews Halley's Comet, a celestial body visible from Earth once in a lifetime, and cholera, an infection caused by bacteria and people. Thanks to audible for sponsoring today's episode: http://audible.com/anthro
The New York Times
The Rogosin Institute
Penelope Pardee
R. Albert Mohler, Jr.
Zoo Podcast
İlker Hepkaner & Sezgin İnceel
SBS
Re-Producers
Piyush Shinde
Ishtihar Khan
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