Harnessing the promise of radiation: The art of reasonableness
Radiation has benefited mankind in many ways, including its use as an energy source and an indispensable tool in medicine. Since the turn of the 20th century, society has sought ways to harness its potential, while at the same time recognizing that radiological exposures need to be carefully controlled. Out of these efforts, and the work of many dedicated professionals, the principles of justification, optimization, and limitation have emerged as guiding concepts.
Justification means that the use of radiation, from any radiation source, must do more good than harm. The concept of optimization calls for the use of radiation at a level that is as low as reasonably achievable (ALARA). Dose constraints, or limitation, are meant to assist in reaching optimization and protection against harm by setting recommended numerical levels of radiation exposure from a particular source or sources. Together, these three principles form the bedrock of the international radiation protection system that drives decision-making and supports societal confidence that radiation is being used in a responsible manner.

ANS Executive Director/CEO Craig Piercy was a recent guest on the
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ANS member Dr. Christopher Morrison was a recent guest on
The start of Marie Curie's story isn't like most of the other scientists that had made a name for themselves throughout history, mostly because she was a grown woman by the start of the 20th century. But she was the first woman to do a lot of things, including getting a Ph.D. from a university in France, and winning a Nobel Prize. She was also the first person ever to win a Nobel Prize in two different fields of science. To say she pushed the societal and scientific boundaries of her era is an understatement.
In January, the U.S. Environmental Protection Agency