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Immediately after using cocaine, users experience a surge of energy and euphoria, but intense emotional and psychological crashes often follow these short-lived highs

In their paper which appears in Marijuana smoke and tobacco smoke share carcinogens, including toxic gases, reactive oxygen species, and polycyclic aromatic hydrocarbons, such as benzo[alpha]pyrene and phenols, which are 20 times higher in unfiltered marijuana than in cigarette smoke, write first author Dr

They also asked city staff to look into how enforcement would be handled, saying they wanted better compliance than theyve had with the citys ban on the use of gas-powered leaf blowers

Elaboration of guidelines for implementation of Article 13 of the Convention

doi:10.1111/j.1463-6409.2011.00478.x