In 1796, Georges Cuvier convinced his fellow researchers that some bones belonged to a species that no longer roamed the Earth.

Entrepreneurs have invested billions in plant-based and lab-grown meats, and the possibilities are endless.

Juliet Tuttle may have been the most prolific murderer of pets in American history. How did she get away with it?

As humans drive vulnerable mammals closer to extinction, valuable mutations hidden in their DNA could be bred out of existence.