(AP) Michael Cera can tell you how to cook a cactus to extract its psychedelic mescaline. But he can’t tell you what a mescaline head trip is like, even though he drank the concoction. Cera and his ...

But I have a special place in my heart for mescaline, which is not around very much. But I got very curious about it, and in my last book, This Is Your Mind on Plants, there’s a chapter on mescaline ...