Discusses the mass extinction of megafauna during the Pleistocene era and what could have caused the event, and looks at the descendants of megafauna living on the Earth today.
Until about 13,000 years ago, North America was home to a menagerie of massive mammals. Mammoths, camels, and lions walked the ground that has become Wilshire Boulevard in Los Angeles and foraged on t
Swamps and marshes once covered vast stretches of the North American landscape. The destruction of these habitats, long seen as wastelands that harbored deadly disease, accelerated in the twentieth ce
