In the rugged terrain where Mexico and the United States meet, a border wall is just the latest obstacle fragmenting habitats ...

The Namib desert’s sand can be burningly hot but its air, blowing in off the Atlantic Ocean, is cool. Running generates a wind over the body. We concluded that the heat from the sun and from the ...

Crickets chirp in the night as Gerardo Marrón calls to an elf owl on a Baja California Sur mountainside in late October.

Some residents along the Gulf Coast are creating habitat for the endangered birds on their properties, but development, ...