Yellowstone Bison Bison Haven't Moved Like This In A Century And The Effects On The Land Are Staggering Scientists America's largest native herbivore continues to demonstrate its vital role as an ecosystem engineer.
Bio-Diversity How Bison Are Saving America's Lost Prairie American prairies were once home to as many as 60 million bison. But when ranching and agriculture displaced elk and bison from the prairies, America’s grasslands all but disappeared.
