Borderland regions such as Białowieża Forest can also be among the continent’s most biodiverse places. The border fence ...

Why do some ancient animals become fossils while others disappear without a trace? A new study reveals that part of the answer lies in the body itself. The research shows that an animal's size and ...

The popular salamanders are nearly extinct in the wild, where they are confined to a small system of canals in Mexico City.

Analysis of the fossil suggests that the only two egg-laying mammals, platypuses and land-based echidnas, both descended from ...

Why do some ancient animals become fossils while others disappear without a trace? A new study from the University of ...

By analyzing the arrangement of vertebrae in the spines of nearly 400 species of tetrapods—a group of animals with four limbs ...