We need a new Earth Day

Edward J. Calabrese in the Financial Post debunks linear no-threshold (LNT) one more time.

Financial Post | Business

Environmental regulations are having a negative impact, not only on societal costs, but on our health as well

The first Earth Day, in 1970, was celebrated after a wave of environmentalism swept the nation. Many give credit to Rachel Carson’s 1962 book, Silent Spring, which popularized the notion of large-scale chemical pollution, for igniting the movement.

But she was really feeding off of a concept developed a few years earlier. The “precautionary principle” was conceptualized when the National Academy of Sciences proposed a radical change in the risk assessment of exposure to radiation and carcinogens. It recommended changing the regulatory paradigm from a “threshold dose” model to a linear one.

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The threshold paradigm was what one might call common sense. It held that humans could tolerate small doses of things that, in larger doses, could be harmful.

Sunlight is a perfect example. Low doses are actually required…

View original post 516 more words

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