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.
Helium is pronounced as HEE-lee-em. History and Uses: Helium, the second most abundant element in the universe, was discovered on the sun before it was found on the earth. Pierre-Jules-Cesar CÃ©sar, janssen A french, astronomer noticed a yellow line in the'sun s spectrum while studying a total solar eclipse in. 1868he earth's atmospheric helium is replaced by the decay of radioactive elements in the earth's crust. Alpha decay, one type of radioactive decay, produces particles called alpha particles.