the.com/fireplace
a controlled wildfire you invite indoors and politely ask to stay put
heat mathMost heat escapes up the chimney, not into the room
open flameBurning wood emits more particulate pollution than cars
original tvHumans have stared into flames for a million years
yule logA looping fire video aired on TV since 1966
draft trickA cold chimney can suck warm air outdoors instead