Health and safety is important, of course — it's tricky enough to remain fit and healthy without the added risk of driving without a seat belt, or inhaling your colleagues' cigarette smoke at work all ...

Radioactivity, by Ernest Rutherford, second ed., 475 (Camb. Univ. Press, 1904). Daily Mail, June 4th, 3, col. 4. (1921). Radioactivity, by Frederick Soddy, 34, 170 ...