The second issue of Food Security is now published, and is free online. It documents some of the multiple causes of food insecurity.
Helium can be found in underground deposits in the earth. Helium can also be found in stars and other planets. The helium underground - and extracted from natural-gas - is a by-product of the natural radioactive decay of uranium, though is far too stable to be radioactive itself. It also occurs in very small amounts in the atmosphere.
Most U.S. helium-rich natural gas is located in the Hugoton-Panhandle field in Texas, Oklahoma, and Kansas; the LaBarge field in the Riley Ridge area of Wyoming; and the federal facility in the Cliffside field near Amarillo, Texas (Figure 2.2).