12+ Exclusive: Meet the man building the 'Photo Ark'
Joel Sartore's Photo Ark project, funded by National Geographic, captures stunning images of over 18,000 animal species.
Galapagos tortoises at Philadelphia Zoo become first-time parents at nearly 100
A pair of critically endangered, nearly 100-year-old Galapagos tortoises at the Philadelphia Zoo have become first-time ...