Why Is Methane Gas Worse for the Environment Than Other Gases?
Lighter and heavier than air gases
Flammable Vapors - heavier and lighter than air
The Density of Gases
Adam Savage goes high and low on Mythbusters
Is CO2 Really a Greenhouse Gas?
3 Hidden Dangers of Methane Gas Detectors Revealed
Leaves - Environmental Answer
Methane vs. Propane
Ship floating in air!
Natural Gas - What is it?
Gas Applications - Methane
Know your gases: Methane
Invisible flammable vapors combust dramatically
Gasoline vapors are heavier than air - demonstration
Demonstration Showing How Carbon Dioxide is Heavier Than Air
Climate Science in a Nutshell #4: Too Much Carbon Dioxide
Air and Methane explosion.
Unlit Flare Sends Methane Into Air - Texas Methane Hunters
More Methane, lighter than air