Colossal Biosciences claims it has revived an extinct species, but scientists outside the company are skeptical. Andrew Zuckerman/Colossal Biosciences Somewhere in the northern US, drones fly over a 2 ...

A litter of “critically endangered” red wolves was born in Tennessee. Amy Smotherman Burgess Zoo Knoxville Six of the “world’s most endangered” wolves were born in Tennessee, bringing renewed hope for ...