The controversial origin of a symbol of the American west

New research by Professor Beth Shapiro of the UC Santa Cruz Genomics Institute and University of Alberta Professor Duane Froese has identified North America's oldest bison fossils and helped construct a bison genealogy establishing ...

New study identifies the best areas for rewilding European bison

At the end of the last ice age, large herds of bison roamed across Europe. But by 1927, the European bison became extinct in the wild, with only about 60 individuals remaining in captivity. Scientists have long debated the ...

Crews shifting work from fossil site to museum

(AP) -- Scientists say results from the first radiocarbon tests show that some of the Ice Age animal bones being excavated in western Colorado are at least 43,500 years old.