was a black rhino subspecies native to the Savanna of central-west Africa. Like other rhino species, even the Western black was hunted extensively for its horn which was in huge demand in the international market. The species was severely affected by heavy poaching towards the...
While bison were not introduced by humans to North America, their rapid spread and diversification arehallmarks of an invasive species— and part of what make bison’s role in the Great Plains ecosystem so significant. “Bison arrived in North America and quickly came to dominate a grazing ecosy...