DAZAIFU, Fukuoka Prefecture--At the foot of 829-meter Mount Homanzan on a recent morning, the participants started like runners in a marathon, swinging their thin limbs nimbly. As they slowly moved up ...

Florida is often called the state with the most invasive animals, and a few of those are frogs and toads that have settled into its warm climate. With its abundant wetlands, forests, rivers, and ...