Helium is a colorless, odorless and tasteless inert gas which has no toxic properties. A member of the rare gas chemical family, it is 1/7 as heavy as air , and is mainly sourced from natural gas wells. Liquid Helium at -452°F is the coldest liquefied gas. Helium has a wide range of uses including cooling superconductive magnets coils in MRI machines, pressurizing rocket rule, creating inert atmospheres for welding and heat treatment, and inflating balloons and even airbags.