The axolotl is a type of salamander. It has a long tail, flat head, and four lizard-like limbs, which it uses to move around the lake floor. But unlike other salamanders, axolotls are neotenic, ...

The smog and noise of Mexico City feel a world away as flotillas of trajineras, brightly decorated wooden gondolas, glide up and down the cool canals of Xochimilco. The quiet network of waterways, on ...

On a crisp November morning a little after dawn, grey mist unspools from the surface of the water of a maze of canals and island farms called Xochimilco. I’m just a dozen miles south of the center of ...