As elements decay they produce Helium. This Helium slowly escapes through the rocks into the atmosphere. Very little Helium is able to escape into space.
- After all factors are considered the Helium in the atmosphere indicates the Earth is less than two million years old (Quoted from “Blowing Old Earth Belief Away”, J. Sarfati, Creation 20(3) p.19-21 1998).
- The amount of Helium present suggests an age of the Universe no more than 11,000 years old.