Season 3 Episode 24

Snow Day

Aired Friday 9:00 PM May 16, 2007 on CBS



  • Trivia

    • Interesting Fact: It is possible for an open flame to be present even when natural gas is in the air. First, gas is lighter than air, so it is possible for a standing person to smell the odor or a wall- or ceiling-mounted monitor to detect its presence if the flame is on a lower surface such as a lab table or a stove burner; second, gas is only explosive within certain limits: if it is less than 5% of the air in a room, there is not enough gas to ignite and if it is more than 15% of the air, it has displaced too much oxygen to support combustion.