it is definitely the greenest way to deliver thc....!
i just got through the solfest @ solar living institute in nor.cali., where i set up a 'solar fire station' - a 4inch magnifier on a pole, and where i preached solar vaping for 2days in a row to a very receptive audience. i introduced solar vaping as an exercise in hand-eye-lung coordination..... and that pretty much conveyes the essence of the magic.