Bouncing along the river, the murky waters of the Amazon River tributary extended in each direction. In the distance, a line of vibrant green trees looked out over the waters, teeming with wildlife, ...

“If you’ve tasted jaraqui, you’ll never leave here,” Márcio da Silva Santos, the tuxaua, or the chief community leader of an Amazonian village named Betel, told the Science reporter Daniel Grossman ...