MR. ROBERT D. POTTBB, of ‘Science Service’, Washington, D.C., points out that the confirmation of the artificial breakdown of uranium announced in New York (see also NATURE, Feb. 11, p. 233) is in the ...

When I first began studying nuclear engineering nearly 40 years ago, I was fascinated by the fact that nuclear reactions can transmute one element to another. As years passed and the nuclear ...