Keystone species play an outsized role in the ecosystem, affecting the natural balance in ways that cannot easily be replaced.

This video highlights three large species that are rapidly declining due to pressure from much smaller animals. Researchers explain how competition, disease transmission, and invasive behavior give ...

Results show that players’ choices echo predator-prey patterns seen in wildlife, though scientists stress the limits of the ...

A bumpy snailfish, Andean mouse opossum and ancient sea cow were just some of the many species described in 2025.