Back in 1968, when I was seven years old, the same age my daughter is now, a big study on radioactive emissions from cathode ray tubes had just come out, and so our new color Philco had become the enemy. (edutopia.org)
When the «green» argument was still struggling for respectability, established scientists used to assert confidently that practices such as dumping waste in the sea or allowing radioactive emissions were «safe». (newscientist.com)
Patients will be surveyed for radioactivity daily, and released once radioactive emissions have reached safe levels. (aercmn.com)