It was around midnight when biologist Paola Muñoz awoke to the sounds of children laughing as pots and pans clattered to the kitchen floor. She listened from her room to an adult voice scolding the mischief-makers. It was followed by the whack of a broom and the barking of Alaska, the resident dog of the field station where she was staying, high in the Talamanca Mountains of Costa Rica. In the morning, she asked the station’s caretaker about the midnight ruckus. “He said, ‘It was those stupid nímbulos, they think…
