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They estimated that the PG exposure from one 50-to 70-mL puff would be from 430 to 603 mg/m 3 , and noted that These exposure concentrations were higher than the points of departure for airway irritation based on a human study (propylene glycol, mean concentration of 309 mg/m 3 ) and a rat study (glycerol, no-observed adverse effect level of 165 mg/m 3 ) (Kienhuis et al., 2015, p
Realistically, if our company is to survive and prosper, over the long term, we must get our share of the youth market, he wrote
In 1982, the Guardian wrote about the Brandt Report, that said: Few threats to peace and survival of the human community are greater than those posed by the prospects of cumulative and irreversible degradation of the biosphere on which human life depends. In the same article, British environmentalist Norman Myers, who was responsible for a lot of the Guardians early biodiversity coverage, wrote about the importance of soils, water, forests, grasslands and fisheries as ecosystems that underpin our material welfare