Several people have written to say that green neon sign crosses are common in Europe (where I've been all of twice, sigh) and indicate conventional pharmacies having no necessary connection with marijuana. That would explain a lot; Europe has certainly led the world in marijuana tolerance. Here, however, green crosses have clearly become culural icons for the medical marijuana industry.
The fine structure constant, which governs the strength of electromagnetic interaction (and thus many properties of matter, including important things like star formation) may not be constant across the entire cosmos. We should be lucky that we're here, because if we were somewhere else we might not be possible. (Thanks to Frank Glover for the link.)
Evidence continues to accumulate that the BMI is not only utterly useless, but in some areas misleading. (It can't even predict obesity.) There are better methods and just as simple. But like the "carbs good, fat bad" mantra, BMI just won't go away, even if it's contributing to early death. (Thanks to my own Carol for the link.)