As I mentioned in a previous article, the world has very limited supplies of helium. The helium we have is close to irreplaceable and necessary for industrial and health-care applications.
Very recently, a discovery in Tanzania was announced of additional helium supplies. There are perhaps 54 billion cubic feet of helium. The world consumes 8 billion cubic feet per year so this gives the world an additional 6 years worth of the precious gas. Considering that the U.S. has the world’s largest known reserves at 153 billion cubic feet, it’s a substantial addition.