The city of Tucson, Arizona, sits on America’s southern border, surrounded by the cactus-strewn landscapes of the Sonoran ...

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

An Arizona city that shares a border and a name with its sister city in Mexico is an artistic, cultural, and culinary ...

WASHINGTON — Some Arizona border officials have welcomed President ... Jaguars, ocelots, mountain lions, bears and other species whose ranges span the border have all been impacted, said Russ ...