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After the leak from the Chicago-based thinkthank the Heartland Institute, much attention is now being focused on the alleged deception used by the water scientist Peter Gleick to obtain the sensitive internal documents

Urine tests, blood tests, and hair tests are the most common methods used to detect THC metabolites

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Figure 1 The Percentage of Adult Cigarette Smokers in California Has Declined as Cigarette Taxes Have Increased Source: Public Healths California Tobacco Facts and Figures 2018 , Public Healths California Tobacco Facts and Figures 2019 , Centers for Disease Control and Prevention, and state law