Tag Archive for 'helium'

Light air rises

Normally hot air rises, but light air does also, in the way that it escapes from the atmosphere more easily than things like nitrogen, oxygen, and carbon dioxide. If we’re not more careful to conserve helium when we get it out of the ground in the future, our kids might miss out on the fun it brings when the party’s over and it’s time to talk funny. As a side effect, science will also suffer