All aboard the Tucano for an expedition up Brazil’s Rio Negro. Fishing for piranha (and eating what you catch). Strolling through an isolated manioc village whose matriarch thinks howler monkeys are “mmm, delicious.” Crawling among the ruins of a 19th-century Portuguese rubber plantation, wondering when the throingggg of a poison dart might whiz past your left ear. And getting lost in the flooded forest, on kayak, hundreds of miles from civilization. Hey, fun times in the Amazon!