From Better night vision through cannabis:
We knew it gave people the munchies and made them giggle. Now researchers claim to have found a new property in cannabis — it helps us see in the dark.Scientists made their discovery after becoming intrigued by Moroccan fishermen who not only failed to lose their sense of direction after smoking generous amounts of local kif, a mixture of cannabis and tobacco, but seemed to navigate better on dark nights.
The Cheech-and-Chong ninja script practically writes itself. (Hat tip to Boing Boing.)