MAIKIUANTS, Ecuador—By the time Olger Kitiar reached the ridge, his shirt was wet with sweat, clinging to his back. Built with the solid frame of a linebacker, he moved through the rainforest with a quick, even rhythm that defied the steep, slick climb.  Then he froze. “Stop,” he hissed in Spanish, his hand snapping up. … Continue reading In the Fight to Defend the Amazon, This Indigenous Community’s Secret Weapon Is Science