27 February 2014
BBC: The pine scent emitted by forests may be more than just a sweet smell. Researchers have been studying the scented compounds given off by pine trees and the way they react with oxygen to form airborne particles, called aerosols. Aerosols are known to reflect sunlight and cause clouds to form, which can have a cooling effect on the atmosphere. Because about half of the aerosols over pine forests seem to come from those pine-scented vapors, the researchers believe they could play a major role in reducing the impact of global warming. Moreover, as temperatures continue to warm, more plants will grow and emit more vapors.