An iron law of journalism dictates that news of increased drug use goes onto Page One and at the top of broadcasts, but news of decreased drug use must be buried or ignored.

The press followed this iron law last month when the nation's leading tester of drugs in the workplace, Quest Diagnostics, released new findings in a press release titled "Amphetamines Use Declined Significantly Among U.S. Workers in 2005." (The company lumps amphetamine and its chemical cousin methamphetamine together in its "amphetamines" category.)