From biochemistry to myth, medicine and meaning discover the species that shaped rituals, rewired minds and transformed societies.What connects Siberian shamans, Amazonian healers, medieval monks and Silicon Valley biohackers? Why have humans across every culture sought out plants that alter perception, mood and consciousness? And how did humble species like the betel leaf or kanna come to shape entire rituals, economies and belief systems?Psychoactive Plants & Fungi is a viv...