There are animals trying to cross as if their life depended on it,” researcher Erick Meza told the Society of Environmental Journalists’ conference.

Walls built along the U.S.-Mexico border over the past several decades are a blight on the landscapes and cultures of the borderlands. Hundreds of miles of wall have been built across protected public ...

Some of the last remaining border wall gaps are within ranges of endangered animals like Peninsular bighorn sheep, jaguars and Mexican gray wolves. “Closing border wall gaps would be devastating for ...