Robert L. Chang, a colorectal surgeon from Manila, has taken many trips up to the Philippines highlands. Considering himself a naturalist, he explores the rugged terrain on the northern island of the ...

SALEM, Ore. — An invasive freshwater crab species that can cause erosion problems and damage flood control as well as threaten native crab species in Oregon was captured in a river in mid-November, ...

Freshwater ecosystems cover less than 1% of Earth’s surface, but are vital for life on this planet. New research reveals that damage to these environments is pushing freshwater animals to the edge of ...

Juan Mateo Rivera looking for crabs in a stream in Assis, Acre State, Brazil in 2022. In Manizales, perched in the Colombian Andes, researchers are studying how a native species of small fresh-water ...