Helium is the second most abundant element in the universe, but you won't find it in the air. That's because this gas is so light that it quickly rises into space. Strangely enough, the helium we find on Earth is actually trapped underground along with natural gas! Helium production is a byproduct of the natural gas industry, but there are relatively few places where helium is concentrated enough to successfully extract it. About 75 percent of the world's supply comes from just three areas – one in Texas, one in Wyoming and one in the country of Qatar.