A research team led by scientists from the University of Auckland in New Zealand has uncovered the presence of narcotic chemicals in the skies over Oceania. The scientists found residues that represented tiny percentages of tetrahydrocannabinol, methamphetamine, nicotine and caffeine.
The concentrations of these chemicals combined do not pose any risk to humans in these or any other areas, but these measurements are commonly used to understand the nature of air pollution as well as to help law enforcement study the kinetics of narcotics.