World - KSYL-AM
Li Jianguo/Xinhua via Getty Images(WASHINGTON) -- Monarch butterfly sightings may be sparser than usual in the U.S. and Canada following a drastic drop in populations wintering in Mexico, researchers told ABC News. The annual census of the number of monarchs that winter in Central Mexico showed that the population decreased "precipitously," the Xerces Society for Invertebrate Conservation, which conducts the research alongside the World Wildlife Fund-Mexico, announced on Wednesday. The number of monarchs dropped from 2.2 hectares in the 2022-2023 season to 0.9 hectares in the 2023-...