They are dirty, harmful to your health, bad for the environment and utterly charming. Wood-burning fireplaces have been with us for centuries and, despite their many drawbacks, are sticking around. Learn more than you thought possible about the fireplace, in this classic episode.

Short Stuff: Aztec Death Whistle
11:30

How Cognitive Biases Work
56:19

Selects: Why Do Great Flood Myths Seem To Be Universal?
44:03